A diazo-naphthalene sulfonate that is widely used as a stain.
An azo dye used in blood volume and cardiac output measurement by the dye dilution method. It is very soluble, strongly bound to plasma albumin, and disappears very slowly.
Aberrant chromosomes with no ends, i.e., circular.
A copper-containing dye used as a gelling agent for lubricants, for staining of bacteria and for the dyeing of histiocytes and fibroblasts in vivo.
Usually a benign tumor, that commonly presents as a solitary blue nodule with spindled MELANOCYTES covered by smooth SKIN. Several variants have been identified, one variant being malignant. The blue color is caused by large, densely packed melanocytes deep in the DERMIS of the nevus. In CHILDREN, they usually occur on the BUTTOCKS and LUMBOSACRAL REGION and are referred to as cellular blue nevi. Malignant blue nevi are more commonly found on the SCALP.
A zinc-binding domain defined by the sequence Cysteine-X2-Cysteine-X(9-39)-Cysteine-X(l-3)-His-X(2-3)-Cysteine-X2-Cysteine -X(4-48)-Cysteine-X2-Cysteine, where X is any amino acid. The RING finger motif binds two atoms of zinc, with each zinc atom ligated tetrahedrally by either four cysteines or three cysteines and a histidine. The motif also forms into a unitary structure with a central cross-brace region and is found in many proteins that are involved in protein-protein interactions. The acronym RING stands for Really Interesting New Gene.
A pH sensitive dye that has been used as an indicator in many laboratory reactions.
Chemicals and substances that impart color including soluble dyes and insoluble pigments. They are used in INKS; PAINTS; and as INDICATORS AND REAGENTS.
A phenothiazine that has been used as a hemostatic, a biological stain, and a dye for wool and silk. Tolonium chloride has also been used as a diagnostic aid for oral and gastric neoplasms and in the identification of the parathyroid gland in thyroid surgery.
Prepaid health and hospital insurance plan.
Compounds that contain the triphenylmethane aniline structure found in rosaniline. Many of them have a characteristic magenta color and are used as COLORING AGENTS.
A dye that has been used as an industrial dye, a laboratory indicator, and a biological stain.
That portion of the electromagnetic spectrum in the visible, ultraviolet, and infrared range.
The visually perceived property of objects created by absorption or reflection of specific wavelengths of light.
A poorly differentiated adenocarcinoma in which the nucleus is pressed to one side by a cytoplasmic droplet of mucus. It usually arises in the gastrointestinal system.
The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.
Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.
Flavoproteins that function as circadian rhythm signaling proteins in ANIMALS and as blue-light photoreceptors in PLANTS. They are structurally-related to DNA PHOTOLYASES and it is believed that both classes of proteins may have originated from an earlier protein that played a role in protecting primitive organisms from the cyclical exposure to UV LIGHT.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
A diverse class of enzymes that interact with UBIQUITIN-CONJUGATING ENZYMES and ubiquitination-specific protein substrates. Each member of this enzyme group has its own distinct specificity for a substrate and ubiquitin-conjugating enzyme. Ubiquitin-protein ligases exist as both monomeric proteins multiprotein complexes.
A genus of WHALES in the family Balaenopteridae, consisting of five species: Blue Whale, Bryde's Whale, FIN WHALE, Sei Whale, and MINKE WHALE. They are distinguished by a relatively slender body, a compressed tail stock, and a pointed snout.
The process by which the CYTOPLASM of a cell is divided.
The directional growth of organisms in response to light. In plants, aerial shoots usually grow towards light. The phototropic response is thought to be controlled by auxin (= AUXINS), a plant growth substance. (From Concise Dictionary of Biology, 1990)
The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups.
The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
Heterocyclic rings containing three nitrogen atoms, commonly in 1,2,4 or 1,3,5 or 2,4,6 formats. Some are used as HERBICIDES.
The characteristic three-dimensional shape of a molecule.
The marking of biological material with a dye or other reagent for the purpose of identifying and quantitating components of tissues, cells or their extracts.
The portion of the descending aorta proceeding from the arch of the aorta and extending to the DIAPHRAGM, eventually connecting to the ABDOMINAL AORTA.
The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments.
Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.
An infraorder of chiefly marine, largely carnivorous CRUSTACEA, in the order DECAPODA, including the genera Cancer, Uca, and Callinectes.
The parts of a macromolecule that directly participate in its specific combination with another molecule.
The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The rate dynamics in chemical or physical systems.
Contraceptive devices used by females.
The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain).
A class of organic compounds containing four or more ring structures, one of which is made up of more than one kind of atom, usually carbon plus another atom. The heterocycle may be either aromatic or nonaromatic.
The level of protein structure in which combinations of secondary protein structures (alpha helices, beta sheets, loop regions, and motifs) pack together to form folded shapes called domains. Disulfide bridges between cysteines in two different parts of the polypeptide chain along with other interactions between the chains play a role in the formation and stabilization of tertiary structure. Small proteins usually consist of only one domain but larger proteins may contain a number of domains connected by segments of polypeptide chain which lack regular secondary structure.
The art or process of comparing photometrically the relative intensities of the light in different parts of the spectrum.
Proteins found in any species of bacterium.
Six-membered heterocycles containing an oxygen and a nitrogen.
The reaction of potassium ferrocyanide with ferric iron to yield a dark blue precipitate at the sites of the ferric iron. Used to determine ferric iron in tissues, particularly in the diagnosis of disorders of iron metabolism.
Inorganic salts of the hypothetical acid ferrocyanic acid (H4Fe(CN)6).
A species of mussel in the genus MYTILUS, family MYTILIDAE, class BIVALVIA, known as the common mussel. It has a bluish-black shell and is highly edible.
That phase of a muscle twitch during which a muscle returns to a resting position.
A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc.
A protein complex of actin and MYOSINS occurring in muscle. It is the essential contractile substance of muscle.
A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471).
The relationship between the dose of an administered drug and the response of the organism to the drug.
A bacterial protein from Pseudomonas, Bordetella, or Alcaligenes which operates as an electron transfer unit associated with the cytochrome chain. The protein has a molecular weight of approximately 16,000, contains a single copper atom, is intensively blue, and has a fluorescence emission band centered at 308nm.
The physiological widening of BLOOD VESSELS by relaxing the underlying VASCULAR SMOOTH MUSCLE.
Single pavement layer of cells which line the luminal surface of the entire vascular system and regulate the transport of macromolecules and blood components.
A free radical gas produced endogenously by a variety of mammalian cells, synthesized from ARGININE by NITRIC OXIDE SYNTHASE. Nitric oxide is one of the ENDOTHELIUM-DEPENDENT RELAXING FACTORS released by the vascular endothelium and mediates VASODILATION. It also inhibits platelet aggregation, induces disaggregation of aggregated platelets, and inhibits platelet adhesion to the vascular endothelium. Nitric oxide activates cytosolic GUANYLATE CYCLASE and thus elevates intracellular levels of CYCLIC GMP.
Elements of limited time intervals, contributing to particular results or situations.
The main trunk of the systemic arteries.
A type of heart valve surgery that involves the repair, replacement, or reconstruction of the annulus of the MITRAL VALVE. It includes shortening the circumference of the annulus to improve valve closing capacity and reinforcing the annulus as a step in more complex valve repairs.
Substances used for the detection, identification, analysis, etc. of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidizers, reducers, fluxes, and colorimetric reagents. (From Grant & Hackh's Chemical Dictionary, 5th ed, p301, p499)
Indolesulfonic acid used as a dye in renal function testing for the detection of nitrates and chlorates, and in the testing of milk.
The physiological narrowing of BLOOD VESSELS by contraction of the VASCULAR SMOOTH MUSCLE.
The degree of similarity between sequences of amino acids. This information is useful for the analyzing genetic relatedness of proteins and species.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
Coloration or discoloration of a part by a pigment.
The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The nonstriated involuntary muscle tissue of blood vessels.
The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.
The region of the stem beneath the stalks of the seed leaves (cotyledons) and directly above the young root of the embryo plant. It grows rapidly in seedlings showing epigeal germination and lifts the cotyledons above the soil surface. In this region (the transition zone) the arrangement of vascular bundles in the root changes to that of the stem. (From Concise Dictionary of Biology, 1990)
Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction.
A characteristic feature of enzyme activity in relation to the kind of substrate on which the enzyme or catalytic molecule reacts.
A multisubunit polycomb protein complex with affinity for CHROMATIN that contains methylated HISTONE H3. It contains an E3 ubiquitin ligase activity that is specific for HISTONE H2A and works in conjunction with POLYCOMB REPRESSIVE COMPLEX 2 to effect EPIGENETIC REPRESSION.
The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.
Theoretical representations that simulate the behavior or activity of chemical processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.
Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.
Drugs used to cause dilation of the blood vessels.
A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company.
Proteins that originate from plants species belonging to the genus ARABIDOPSIS. The most intensely studied species of Arabidopsis, Arabidopsis thaliana, is commonly used in laboratory experiments.
Measurement of the intensity and quality of fluorescence.
Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example Cl2, SO2, NO2, CS2, ozone, mercury vapor, and various unsaturated compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Microscopy of specimens stained with fluorescent dye (usually fluorescein isothiocyanate) or of naturally fluorescent materials, which emit light when exposed to ultraviolet or blue light. Immunofluorescence microscopy utilizes antibodies that are labeled with fluorescent dye.
A class of enzymes that form a thioester bond to UBIQUITIN with the assistance of UBIQUITIN-ACTIVATING ENZYMES. They transfer ubiquitin to the LYSINE of a substrate protein with the assistance of UBIQUITIN-PROTEIN LIGASES.
A plant genus of the family BRASSICACEAE that contains ARABIDOPSIS PROTEINS and MADS DOMAIN PROTEINS. The species A. thaliana is used for experiments in classical plant genetics as well as molecular genetic studies in plant physiology, biochemistry, and development.
A low-energy attractive force between hydrogen and another element. It plays a major role in determining the properties of water, proteins, and other compounds.
Mental processing of chromatic signals (COLOR VISION) from the eye by the VISUAL CORTEX where they are converted into symbolic representations. Color perception involves numerous neurons, and is influenced not only by the distribution of wavelengths from the viewed object, but also by its background color and brightness contrast at its boundary.
An alpha-1 adrenergic agonist used as a mydriatic, nasal decongestant, and cardiotonic agent.
A family of nonbiting midges, in the order DIPTERA. Salivary glands of the genus Chironomus are used in studies of cellular genetics and biochemistry.
The measurement of the amplitude of the components of a complex waveform throughout the frequency range of the waveform. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor.
Drugs used to cause constriction of the blood vessels.
An adenine nucleotide containing three phosphate groups esterified to the sugar moiety. In addition to its crucial roles in metabolism adenosine triphosphate is a neurotransmitter.
Light absorbing proteins and protein prosthetic groups found in certain microorganisms. Some microbial photoreceptors initiate specific chemical reactions which signal a change in the environment, while others generate energy by pumping specific ions across a cellular membrane.
A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.
Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.
A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain.
Motifs in DNA- and RNA-binding proteins whose amino acids are folded into a single structural unit around a zinc atom. In the classic zinc finger, one zinc atom is bound to two cysteines and two histidines. In between the cysteines and histidines are 12 residues which form a DNA binding fingertip. By variations in the composition of the sequences in the fingertip and the number and spacing of tandem repeats of the motif, zinc fingers can form a large number of different sequence specific binding sites.
The property of emitting radiation while being irradiated. The radiation emitted is usually of longer wavelength than that incident or absorbed, e.g., a substance can be irradiated with invisible radiation and emit visible light. X-ray fluorescence is used in diagnosis.
The composition, conformation, and properties of atoms and molecules, and their reaction and interaction processes.
Electrophoresis in which a polyacrylamide gel is used as the diffusion medium.
The presence of methemoglobin in the blood, resulting in cyanosis. A small amount of methemoglobin is present in the blood normally, but injury or toxic agents convert a larger proportion of hemoglobin into methemoglobin, which does not function reversibly as an oxygen carrier. Methemoglobinemia may be due to a defect in the enzyme NADH methemoglobin reductase (an autosomal recessive trait) or to an abnormality in hemoglobin M (an autosomal dominant trait). (Dorland, 27th ed)
A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments.
The act of ligating UBIQUITINS to PROTEINS to form ubiquitin-protein ligase complexes to label proteins for transport to the PROTEASOME ENDOPEPTIDASE COMPLEX where proteolysis occurs.
A blue-green biliprotein widely distributed in the plant kingdom.
The fission of a CELL. It includes CYTOKINESIS, when the CYTOPLASM of a cell is divided, and CELL NUCLEUS DIVISION.
The span of viability of a cell characterized by the capacity to perform certain functions such as metabolism, growth, reproduction, some form of responsiveness, and adaptability.
Any normal or abnormal coloring matter in PLANTS; ANIMALS or micro-organisms.
The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.
Filamentous proteins that are the main constituent of the thin filaments of muscle fibers. The filaments (known also as filamentous or F-actin) can be dissociated into their globular subunits; each subunit is composed of a single polypeptide 375 amino acids long. This is known as globular or G-actin. In conjunction with MYOSINS, actin is responsible for the contraction and relaxation of muscle.
Function of the human eye that is used in bright illumination or in daylight (at photopic intensities). Photopic vision is performed by the three types of RETINAL CONE PHOTORECEPTORS with varied peak absorption wavelengths in the color spectrum (from violet to red, 400 - 700 nm).
Proteins prepared by recombinant DNA technology.
A powerful vasodilator used in emergencies to lower blood pressure or to improve cardiac function. It is also an indicator for free sulfhydryl groups in proteins.
Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.
A highly conserved 76-amino acid peptide universally found in eukaryotic cells that functions as a marker for intracellular PROTEIN TRANSPORT and degradation. Ubiquitin becomes activated through a series of complicated steps and forms an isopeptide bond to lysine residues of specific proteins within the cell. These "ubiquitinated" proteins can be recognized and degraded by proteosomes or be transported to specific compartments within the cell.
Derivatives of the dimethylisoalloxazine (7,8-dimethylbenzo[g]pteridine-2,4(3H,10H)-dione) skeleton. Flavin derivatives serve an electron transfer function as ENZYME COFACTORS in FLAVOPROTEINS.
The arrangement of two or more amino acid or base sequences from an organism or organisms in such a way as to align areas of the sequences sharing common properties. The degree of relatedness or homology between the sequences is predicted computationally or statistically based on weights assigned to the elements aligned between the sequences. This in turn can serve as a potential indicator of the genetic relatedness between the organisms.
Established cell cultures that have the potential to propagate indefinitely.
Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).
Agents that emit light after excitation by light. The wave length of the emitted light is usually longer than that of the incident light. Fluorochromes are substances that cause fluorescence in other substances, i.e., dyes used to mark or label other compounds with fluorescent tags.
A genus of ascomycetous fungi of the family Schizosaccharomycetaceae, order Schizosaccharomycetales.
Photosensitive proteins expressed in the ROD PHOTORECEPTOR CELLS. They are the protein components of rod photoreceptor pigments such as RHODOPSIN.
Guanosine cyclic 3',5'-(hydrogen phosphate). A guanine nucleotide containing one phosphate group which is esterified to the sugar moiety in both the 3'- and 5'-positions. It is a cellular regulatory agent and has been described as a second messenger. Its levels increase in response to a variety of hormones, including acetylcholine, insulin, and oxytocin and it has been found to activate specific protein kinases. (From Merck Index, 11th ed)
Major constituent of the cytoskeleton found in the cytoplasm of eukaryotic cells. They form a flexible framework for the cell, provide attachment points for organelles and formed bodies, and make communication between parts of the cell possible.
Oxidases that specifically introduce DIOXYGEN-derived oxygen atoms into a variety of organic molecules.
An essential amino acid that is physiologically active in the L-form.
Transport proteins that carry specific substances in the blood or across cell membranes.
Proteins which participate in contractile processes. They include MUSCLE PROTEINS as well as those found in other cells and tissues. In the latter, these proteins participate in localized contractile events in the cytoplasm, in motile activity, and in cell aggregation phenomena.
Drugs that are pharmacologically inactive but when exposed to ultraviolet radiation or sunlight are converted to their active metabolite to produce a beneficial reaction affecting the diseased tissue. These compounds can be administered topically or systemically and have been used therapeutically to treat psoriasis and various types of neoplasms.
Genetically engineered MUTAGENESIS at a specific site in the DNA molecule that introduces a base substitution, or an insertion or deletion.
The technique of washing tissue specimens with a concentrated solution of a heavy metal salt and letting it dry. The specimen will be covered with a very thin layer of the metal salt, being excluded in areas where an adsorbed macromolecule is present. The macromolecules allow electrons from the beam of an electron microscope to pass much more readily than the heavy metal; thus, a reversed or negative image of the molecule is created.
Colorless to yellow dye that is reducible to blue or black formazan crystals by certain cells; formerly used to distinguish between nonbacterial and bacterial diseases, the latter causing neutrophils to reduce the dye; used to confirm diagnosis of chronic granulomatous disease.
The process of cleaving a chemical compound by the addition of a molecule of water.
Recombinant proteins produced by the GENETIC TRANSLATION of fused genes formed by the combination of NUCLEIC ACID REGULATORY SEQUENCES of one or more genes with the protein coding sequences of one or more genes.
The property of blood capillary ENDOTHELIUM that allows for the selective exchange of substances between the blood and surrounding tissues and through membranous barriers such as the BLOOD-AIR BARRIER; BLOOD-AQUEOUS BARRIER; BLOOD-BRAIN BARRIER; BLOOD-NERVE BARRIER; BLOOD-RETINAL BARRIER; and BLOOD-TESTIS BARRIER. Small lipid-soluble molecules such as carbon dioxide and oxygen move freely by diffusion. Water and water-soluble molecules cannot pass through the endothelial walls and are dependent on microscopic pores. These pores show narrow areas (TIGHT JUNCTIONS) which may limit large molecule movement.
A gamma-emitting radionuclide imaging agent used for the diagnosis of diseases in many tissues, particularly in the gastrointestinal system, liver, and spleen.
Specialized cells in the invertebrates that detect and transduce light. They are predominantly rhabdomeric with an array of photosensitive microvilli. Illumination depolarizes invertebrate photoreceptors by stimulating Na+ influx across the plasma membrane.
A heavy metal trace element with the atomic symbol Cu, atomic number 29, and atomic weight 63.55.
Benzopyrroles with the nitrogen at the number one carbon adjacent to the benzyl portion, in contrast to ISOINDOLES which have the nitrogen away from the six-membered ring.
Photosensitive afferent neurons located primarily within the FOVEA CENTRALIS of the MACULA LUTEA. There are three major types of cone cells (red, blue, and green) whose photopigments have different spectral sensitivity curves. Retinal cone cells operate in daylight vision (at photopic intensities) providing color recognition and central visual acuity.
A non-selective inhibitor of nitric oxide synthase. It has been used experimentally to induce hypertension.
The level of protein structure in which regular hydrogen-bond interactions within contiguous stretches of polypeptide chain give rise to alpha helices, beta strands (which align to form beta sheets) or other types of coils. This is the first folding level of protein conformation.
Specialized cells that detect and transduce light. They are classified into two types based on their light reception structure, the ciliary photoreceptors and the rhabdomeric photoreceptors with MICROVILLI. Ciliary photoreceptor cells use OPSINS that activate a PHOSPHODIESTERASE phosphodiesterase cascade. Rhabdomeric photoreceptor cells use opsins that activate a PHOSPHOLIPASE C cascade.
A deoxyribonucleotide polymer that is the primary genetic material of all cells. Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions. DNA, which consists of a polysugar-phosphate backbone possessing projections of purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine).
An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.
The absence of light.
The sum of the weight of all the atoms in a molecule.
The cartilaginous and membranous tube descending from the larynx and branching into the right and left main bronchi.
The characteristic 3-dimensional shape and arrangement of multimeric proteins (aggregates of more than one polypeptide chain).
Proteins that have one or more tightly bound metal ions forming part of their structure. (Dorland, 28th ed)
Defects of color vision are mainly hereditary traits but can be secondary to acquired or developmental abnormalities in the CONES (RETINA). Severity of hereditary defects of color vision depends on the degree of mutation of the ROD OPSINS genes (on X CHROMOSOME and CHROMOSOME 3) that code the photopigments for red, green and blue.
Study of intracellular distribution of chemicals, reaction sites, enzymes, etc., by means of staining reactions, radioactive isotope uptake, selective metal distribution in electron microscopy, or other methods.
The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment.
A polyanionic compound with an unknown mechanism of action. It is used parenterally in the treatment of African trypanosomiasis and it has been used clinically with diethylcarbamazine to kill the adult Onchocerca. (From AMA Drug Evaluations Annual, 1992, p1643) It has also been shown to have potent antineoplastic properties.
Treatment of disease by exposure to light, especially by variously concentrated light rays or specific wavelengths.
The class of all enzymes catalyzing oxidoreduction reactions. The substrate that is oxidized is regarded as a hydrogen donor. The systematic name is based on donor:acceptor oxidoreductase. The recommended name will be dehydrogenase, wherever this is possible; as an alternative, reductase can be used. Oxidase is only used in cases where O2 is the acceptor. (Enzyme Nomenclature, 1992, p9)
Single chains of amino acids that are the units of multimeric PROTEINS. Multimeric proteins can be composed of identical or non-identical subunits. One or more monomeric subunits may compose a protomer which itself is a subunit structure of a larger assembly.
An NADPH-dependent enzyme that catalyzes the conversion of L-ARGININE and OXYGEN to produce CITRULLINE and NITRIC OXIDE.
An enzyme that catalyzes the conversion of GTP to 3',5'-cyclic GMP and pyrophosphate. It also acts on ITP and dGTP. (From Enzyme Nomenclature, 1992) EC
Proteins that control the CELL DIVISION CYCLE. This family of proteins includes a wide variety of classes, including CYCLIN-DEPENDENT KINASES, mitogen-activated kinases, CYCLINS, and PHOSPHOPROTEIN PHOSPHATASES as well as their putative substrates such as chromatin-associated proteins, CYTOSKELETAL PROTEINS, and TRANSCRIPTION FACTORS.
Compounds with a 5-membered ring of four carbons and an oxygen. They are aromatic heterocycles. The reduced form is tetrahydrofuran.
Proteins which are involved in the phenomenon of light emission in living systems. Included are the "enzymatic" and "non-enzymatic" types of system with or without the presence of oxygen or co-factors.
Slender-bodies diurnal insects having large, broad wings often strikingly colored and patterned.
Compounds that bind to and block the stimulation of PURINERGIC P2 RECEPTORS.
The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway.
Alicyclic hydrocarbons in which three or more of the carbon atoms in each molecule are united in a ring structure and each of the ring carbon atoms is joined to two hydrogen atoms or alkyl groups. The simplest members are cyclopropane (C3H6), cyclobutane (C4H8), cyclohexane (C6H12), and derivatives of these such as methylcyclohexane (C6H11CH3). (From Sax, et al., Hawley's Condensed Chemical Dictionary, 11th ed)
An inhibitor of nitric oxide synthetase which has been shown to prevent glutamate toxicity. Nitroarginine has been experimentally tested for its ability to prevent ammonia toxicity and ammonia-induced alterations in brain energy and ammonia metabolites. (Neurochem Res 1995:200(4):451-6)
Compounds based on ANTHRACENES which contain two KETONES in any position. Substitutions can be in any position except on the ketone groups.
Compounds with three aromatic rings in linear arrangement with an OXYGEN in the center ring.
Chemical reactions effected by light.
Photosensitive protein complexes of varied light absorption properties which are expressed in the PHOTORECEPTOR CELLS. They are OPSINS conjugated with VITAMIN A-based chromophores. Chromophores capture photons of light, leading to the activation of opsins and a biochemical cascade that ultimately excites the photoreceptor cells.
The phenomenon whereby certain chemical compounds have structures that are different although the compounds possess the same elemental composition. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
Proteins found in plants (flowers, herbs, shrubs, trees, etc.). The concept does not include proteins found in vegetables for which VEGETABLE PROTEINS is available.
Histochemical localization of immunoreactive substances using labeled antibodies as reagents.
The subfamily of myosin proteins that are commonly found in muscle fibers. Myosin II is also involved a diverse array of cellular functions including cell division, transport within the GOLGI APPARATUS, and maintaining MICROVILLI structure.
Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed)
Protein analogs and derivatives of the Aequorea victoria green fluorescent protein that emit light (FLUORESCENCE) when excited with ULTRAVIOLET RAYS. They are used in REPORTER GENES in doing GENETIC TECHNIQUES. Numerous mutants have been made to emit other colors or be sensitive to pH.
That portion of the electromagnetic spectrum immediately below the visible range and extending into the x-ray frequencies. The longer wavelengths (near-UV or biotic or vital rays) are necessary for the endogenous synthesis of vitamin D and are also called antirachitic rays; the shorter, ionizing wavelengths (far-UV or abiotic or extravital rays) are viricidal, bactericidal, mutagenic, and carcinogenic and are used as disinfectants.
The primary plant photoreceptor responsible for perceiving and mediating responses to far-red light. It is a PROTEIN-SERINE-THREONINE KINASE that is translocated to the CELL NUCLEUS in response to light signals.
Proteins obtained from ESCHERICHIA COLI.
A condensation product of riboflavin and adenosine diphosphate. The coenzyme of various aerobic dehydrogenases, e.g., D-amino acid oxidase and L-amino acid oxidase. (Lehninger, Principles of Biochemistry, 1982, p972)
Cyclic esters of hydroxy carboxylic acids, containing a 1-oxacycloalkan-2-one structure. Large cyclic lactones of over a dozen atoms are MACROLIDES.
Objects of precious metal usually containing gems and worn to enhance personal appearance. Health concerns include possible contamination from lead content or bacteria.
A class in the phylum MOLLUSCA comprised of mussels; clams; OYSTERS; COCKLES; and SCALLOPS. They are characterized by a bilaterally symmetrical hinged shell and a muscular foot used for burrowing and anchoring.
Stable elementary particles having the smallest known positive charge, found in the nuclei of all elements. The proton mass is less than that of a neutron. A proton is the nucleus of the light hydrogen atom, i.e., the hydrogen ion.
A genus of bacteria that form a nonfragmented aerial mycelium. Many species have been identified with some being pathogenic. This genus is responsible for producing a majority of the ANTI-BACTERIAL AGENTS of practical value.
The branch of biology dealing with the effect of light on organisms.
A plant photo regulatory protein that exists in two forms that are reversibly interconvertible by LIGHT. In response to light it moves to the CELL NUCLEUS and regulates transcription of target genes. Phytochrome B plays an important role in shade avoidance and mediates plant de-etiolation in red light.
A species of the genus SACCHAROMYCES, family Saccharomycetaceae, order Saccharomycetales, known as "baker's" or "brewer's" yeast. The dried form is used as a dietary supplement.
A white crystal or crystalline powder used in BUFFERS; FERTILIZERS; and EXPLOSIVES. It can be used to replenish ELECTROLYTES and restore WATER-ELECTROLYTE BALANCE in treating HYPOKALEMIA.
An essential amino acid that is required for the production of HISTAMINE.
A widely distributed order of perching BIRDS, including more than half of all bird species.
Stable elementary particles having the smallest known negative charge, present in all elements; also called negatrons. Positively charged electrons are called positrons. The numbers, energies and arrangement of electrons around atomic nuclei determine the chemical identities of elements. Beams of electrons are called CATHODE RAYS.
The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells.
A group of compounds consisting in part of two rings sharing one atom (usually a carbon) in common.
A rigorously mathematical analysis of energy relationships (heat, work, temperature, and equilibrium). It describes systems whose states are determined by thermal parameters, such as temperature, in addition to mechanical and electromagnetic parameters. (From Hawley's Condensed Chemical Dictionary, 12th ed)
Elimination of ENVIRONMENTAL POLLUTANTS; PESTICIDES and other waste using living organisms, usually involving intervention of environmental or sanitation engineers.
A part of the embryo in a seed plant. The number of cotyledons is an important feature in classifying plants. In seeds without an endosperm, they store food which is used in germination. In some plants, they emerge above the soil surface and become the first photosynthetic leaves. (From Concise Dictionary of Biology, 1990)
The illumination of an environment and the arrangement of lights to achieve an effect or optimal visibility. Its application is in domestic or in public settings and in medical and non-medical environments.
A group of enzymes which catalyze the hydrolysis of ATP. The hydrolysis reaction is usually coupled with another function such as transporting Ca(2+) across a membrane. These enzymes may be dependent on Ca(2+), Mg(2+), anions, H+, or DNA.
Bones that constitute each half of the pelvic girdle in VERTEBRATES, formed by fusion of the ILIUM; ISCHIUM; and PUBIC BONE.
Proteins that originate from insect species belonging to the genus DROSOPHILA. The proteins from the most intensely studied species of Drosophila, DROSOPHILA MELANOGASTER, are the subject of much interest in the area of MORPHOGENESIS and development.
A coenzyme for a number of oxidative enzymes including NADH DEHYDROGENASE. It is the principal form in which RIBOFLAVIN is found in cells and tissues.
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Greater blue-ringed octopus (Hapalochlaena lunulata) Southern blue-ringed octopus or lesser blue-ringed octopus (Hapalochlaena ... "What makes blue-rings so deadly?". Retrieved 2007-03-19. Network, Divers Alert. "Blue-Ringed Octopus". www.diversalertnetwork. ... the blue-ringed octopus swims by expelling water from a funnel in a form of jet propulsion. The blue-ringed octopus diet ... "How does the blue-ringed octopus (Hapalochlaena lunulata) flash its blue rings?". The Journal of Experimental Biology. 215 (21 ...
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Blue-ringed octopuses, named for the iridescent blue rings that flash across their bodies when theyre agitated or threatened ... Blue-ringed octopuses, named for the iridescent blue rings that flash across their bodies when theyre agitated or threatened ... Blue-ringed octopuses, named for the iridescent blue rings that flash across their bodies when theyre agitated or threatened ... Blue-ringed octopuses, named for the iridescent blue rings that flash across their bodies when theyre agitated or threatened ...
  • Blue-ringed octopuses, comprising the genus Hapalochlaena, are four highly venomous species of octopus that are found in tide pools and coral reefs in the Pacific and Indian oceans, from Japan to Australia. (wikipedia.org)
  • There are four confirmed species of Hapalochlaena, and six possible but still undescribed species being researched: Greater blue-ringed octopus (Hapalochlaena lunulata) Southern blue-ringed octopus or lesser blue-ringed octopus (Hapalochlaena maculosa) Blue-lined octopus (Hapalochlaena fasciata) Hapalochlaena nierstraszi was documented and described in 1938 from a single specimen found in the Bay of Bengal, with a second specimen caught and described in 2013. (wikipedia.org)
  • In the greater blue-ringed octopus (Hapalochlaena lunulata), the rings contain multi-layer light reflectors called iridophores. (wikipedia.org)
  • The southern blue-ringed octopus (Hapalochlaena maculosa) is one of three (or perhaps four) highly venomous species of blue-ringed octopuses. (wikipedia.org)
  • The Lesser Blue ringed octopus, Hapalochlaena maculosa (found only in Australia), and Greater Blue Ringed Octopus, Hapalochleana lunulata, are the most common. (uwphotographyguide.com)
  • Blue-ringed octopus Hapalochlaena maculosa from Melbourne, Australia. (uwphotographyguide.com)
  • Southern Blue-ringed Octopus (Hapalochlaena maculosa) - swimming mid-water at night. (oceanwideimages.com)
  • Blue-ringed octopuses spend most of their time hiding in crevices while displaying effective camouflage patterns with their dermal chromatophore cells. (wikipedia.org)
  • These octopuses have an average of about 60 rings that have multilayer reflectors that allow them to flash a blue green color. (wikipedia.org)
  • Despite their highly toxic venom, southern blue-ringed octopuses tend to be passive and relatively harmless unless provoked. (wikipedia.org)
  • In addition, it was found that southern blue-ringed octopuses have at least slightly more acute olfaction (smell) sense which may affect choice in mate (see Breeding, below). (wikipedia.org)
  • Blue-ringed octopuses, named for the iridescent blue rings that flash across their bodies when they're agitated or threatened are capable of gravely injuring and even killing humans with just one bite. (nationalgeographic.com)
  • Blue-ringed octopuses range from about four to six centimetres long, with arms reaching lengths of seven to 10 centimetres. (watoday.com.au)
  • I heard about blue-ringed octopuses growing up but have never seen one myself, I always thought they were big, not small like this one,' she said. (watoday.com.au)
  • Interestingly, blue-ringed octopuses are not affected by TTX, probably because they have evolved a slightly different sodium channel receptor that does not interact with the TTX molecule. (tonmo.com)
  • Blue ringed octopuses are a deep brown to gold until antagonized then flashing the trademark of the bright iridescent blue rings as a warning or aposematic response to perceived danger. (uwphotographyguide.com)
  • Select ring size (U.S. (riogrande.com)
  • Ring is only available at jcp.com in size 7. (jcpenney.com)
  • I think that the size of the cross is perfect, the blue color of the stones is vibrant and it feels comfortable on. (dreamlandjewelry.com)
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  • What is Find My Ring Size? (celtic-weddingrings.com)
  • Find My Ring Size is online ring sizer that offers a simple, reliable, and highly accurate solution. (celtic-weddingrings.com)
  • citation needed] The blue-ringed species are known for their small size, yet the southern variety is hailed as the largest of the genus. (wikipedia.org)
  • What Ring Size Should I Order? (kay.com)
  • find the U.S. ring size closest to this measurement in the list below. (kay.com)
  • Do all rings come in the same size or are there different sizes available? (kay.com)
  • All of our rings are sized to what has been determined is an average finger size. (kay.com)
  • When you purchase a ring on kay.com, you will be shown the size (or sizes) in which the ring is available. (kay.com)
  • If your finger is a different size, we can adjust the ring. (kay.com)
  • If you are unsure about your ring size, please visit JewelryWise.com . (kay.com)
  • Our Ring Sizer tool will help you figure out what size you need. (kay.com)
  • Check out the Ring Sizing Guide to find your ring size. (shopnbc.com)
  • The blue-ringed octopus is the size of a golf ball but its poison is powerful enough to kill an adult human in minutes. (projectnoah.org)
  • This ring comes in U.S. ring sizes 8 through 12 (including 1/2 size increments). (wolfandbadger.com)
  • The species are divided and named not by the size of the animal but by the amount of rings. (uwphotographyguide.com)
  • Maximum of characters or spaces are dependent on the width and size of ring as well as the font you choose. (tirings.com)
  • You pick the finish, the size and even the width of the ring (Note: this can alter the appearance, especially when it comes to the inlay channels). (moonstone-jewelry.com)
  • Its 1.5-inch round rings hold up to 275 sheets of letter-size paper, making it the go-to choice for storage of client presentations, class reports or project files. (quill.com)
  • Please give us the finger size required for this ring by leaving a message in the live chat (press the red 'help' on this page) We will then make sure that the ring will fit. (opalmine.com)
  • If you are not sure how to get your finger size, please go here https://opalmine.com/customized-opal-jewelry/opal-ring-sizing-chart/ for the international sizing chart and instructions as to how you can find the size easily. (opalmine.com)
  • Custom-made to fit her ring size. (zales.com)
  • This ring is available in size 7 only. (zales.com)
  • The blue-ringed octopus diet typically consists of small crabs and shrimp. (wikipedia.org)
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  • 14K White Gold Halo Engagement Ring with Round Diamonds (.52 ct. (danforthdiamond.com)
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  • Rated 5 out of 5 by Chancie McRae from GREAT PRODUCT I love this ring its a eye-catcher and everyone who looks at my hand loves the sparkling diamonds and great complements. (palmbeachjewelry.com)
  • Gemvara's sapphires are a beautiful royal blue. (gemvara.com)
  • There are three 2.5 mm round blue sapphires on either side of the center setting for a total of six sapphires. (danforthdiamond.com)
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  • For blue Sapphires, the most gorgeous and expensive ones were Sapphires from Kashmir, but this deposit is no longer active. (traxnyc.com)
  • Nowadays, the best ones come from Sri Lanka -which is the best deposit for any kind of sapphires - they're called "Ceylon" or "Ceylonese" sapphires and have a cornflower blue color. (traxnyc.com)
  • They can be identified by their yellowish skin and characteristic blue and black rings that change color dramatically when the animal is threatened. (wikipedia.org)
  • If they are provoked, they quickly change color, becoming bright yellow with each of the 50-60 rings flashing bright iridescent blue within a third of a second as an aposematic warning display. (wikipedia.org)
  • When these relax and muscles outside the ring contract, the iridescence is exposed thereby revealing the blue color. (wikipedia.org)
  • Light greenish blue in color with low brilliance. (angara.com)
  • Stunning deep greenish blue color. (angara.com)
  • The ring is made with genuine topaz that has been permanently treated by Swarovski's patented Thermal Color Fusion process. (kay.com)
  • The metallic color of many insects, especially certain metallic blue butterflies, is a good example of iridescence. (wetpixel.com)
  • This Men's Cobalt Blue Carbon Fiber Inlay Tungsten Ring features a beautiful color pair! (evesaddiction.com)
  • Vivid, transparent blue is the most rare and prized color. (reeds.com)
  • Known as the stone of prosperity, the blue zircon's rich color is beautiful, making it the most popular nose ring in our collection. (freshtrends.com)
  • With wings of sparkling blue topaz and sunny yellow citrine, this ring is reminiscent of a beautiful summer day. (freshtrends.com)
  • This binder looks streamlined and fashionable, but its 1" round rings hold up to 175 sheets of 8 1/2" x 11" paper. (officedepot.com)
  • See pricing info, deals and product reviews for Staples Laminated O Ring Binder, A4, 35mm Spine, Blue at Staples.co.uk. (staples.co.uk)
  • Keep your reports, notes, and business proposals organized with this Universal UNV20705 royal blue polypropylene non-view binder with 4" slant rings and spine label holder! (webstaurantstore.com)
  • Featuring (3) 4" slant rings with a 775 sheet capacity, this binder allows you to store more documents than comparable round ring binders. (webstaurantstore.com)
  • See pricing info, deals and product reviews for Omnimed Heavy Duty 3 Ring Tri- Polymer Binder Light Blue (205022-LB) at Quill.com. (quill.com)
  • See pricing info, deals and product reviews for Avery® Economy 1-1/2' Round Ring Binder, Non-View, Blue, 3-Ring at Quill.com. (quill.com)
  • Choose the Avery 275-sheet round ring binder for its simplistic design and durable, easy-to-use locking round rings. (quill.com)
  • The Avery Economy binder with 1.5-inch rings boasts two interior pockets that keep loose papers easily accessible. (quill.com)
  • Whether storing employee handbooks, class reports or important household papers, the Avery Economy binder with 1.5-inch rings is the ideal choice. (quill.com)
  • Less is more with this Avery 275-sheet round ring binder. (quill.com)
  • From our signature collection comes this attractive sterling silver ring in December birthstone colour. (thejewelhut.co.uk)
  • The heart shaped diamond engagement ring is the ultimate symbol of love. (bluenile.com)
  • A bold and distinctive choice, match a heart cut diamond to one of our handcrafted settings for a meaningful engagement ring. (bluenile.com)
  • At Diamond Heaven we have a vast range of Wedding Ring profiles for you to choose from. (diamond-heaven.co.uk)
  • 1.95 carats of London Blue Topaz, 0.63 carat of Diamond. (angara.com)
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  • This handcrafted sterling silver ring features two bezel-set faceted gemstones-one 2mm square blue topaz and one 2.5mm round peridot. (riogrande.com)
  • 7 Pcs Value Pack of Assorted 316L Surgical Steel 2mm CZ L Bend Nose Rings. (bellybling.net)
  • This Ring from the Origin Collection has been crafted from 925 Sterling Silver with Dark Blue Apatite Stone.This collection is a homage to Mother Earth's beauty through timeless designs with exotic stones and innovative metal textures. (wolfandbadger.com)
  • This is a wonderful 2.5 mm engagement ring with small side stones. (danforthdiamond.com)
  • The blue cubic zirconia gem is sure to sparkle and shin when you wear this to matc. (bellybling.net)
  • This polished band features sparkly clear cubic zirconia's set along with a large, dramatic sparkly sky blue cubic zirconia stone. (argenteus.co.uk)
  • The smooth sterling silver shank holds a faceted blue cubic zirconia in a stylish rub over setting. (thejewelhut.co.uk)
  • Designed in an imposing elongated style, this simulated blue sapphire and cubic zirconia pave ring, 3.81 carats T.W., swirls and curves with artful elegance enhanced by beautiful blue simulated sapphire accents. (palmbeachjewelry.com)
  • The young begin hunting around one month of age- they are said to be venomous from birth, while their blue rings don't appear until six weeks after hatching. (wikipedia.org)
  • This is a durable straight barbell tongue ring made from solid TITANIUM 6ALV-ELI (Grade 23) IMPLANT GRADE. (bodyjewelry.com)
  • All ordered rings are sized to your exact specifications. (tirings.com)
  • Please check our ring sizing guide before purchasing your ring. (argenteus.co.uk)
  • Ring Binders with attractive colours for organising your file. (staples.co.uk)
  • A4 ring binders with a gloss laminated paper covering in modern bright colours. (staples.co.uk)
  • Lyreco's 4D ring binders are manufactured from sturdy board with a polypropylene covering for added durability and the ability to be wiped clean. (lyreco.com)
  • These binders have a heavy duty 3 ring system and come in a variety of fade-resistant colors to compliment your office or home needs. (quill.com)
  • Featuring a trillion shaped Swiss blue topaz, this ring is also accented with created white sapphire. (reeds.com)
  • Blue Titanium Celtic Wedding Band One of our most stylish and best selling titanium rings. (applesofgold.com)
  • Anodized powder-coated blue titanium ensures a titanium band that will not fade. (applesofgold.com)
  • Brighten your blue sky days with this Blue Titanium Ring Set, sporting a bold blue line down the center of each highly polished titanium ring. (tirings.com)
  • As a matching set, these titanium bands are the perfect wedding rings. (tirings.com)
  • Titanium Rings Studio offers a 30 day refund policy for you, which we feel addresses issues that may arise while you are considering purchasing from us online. (tirings.com)
  • Our titanium rings are guaranteed for life! (tirings.com)
  • Though we offer the best craftsmanship possible for all styles of titanium rings, please be aware that any prong set ring, whether made of titanium or any softer metal, does require lifetime maintenance. (tirings.com)
  • With an aerodynamic curve and healthy glow, this Blue Titanium Wedding Band Set shifts smoothly from work to play. (tirings.com)
  • This is a light blue 14 gauge Solid Titanium Twister ring with 6mm jewels on both ends. (bodyjewelry.com)
  • Each of our titanium rings is custom made to your needs. (moonstone-jewelry.com)
  • The blue colors you see are a layer of titanium oxide naturally protected within the depths of the recessed channels. (moonstone-jewelry.com)
  • Great quality yellow and blue titanium anodized captive bead rings. (monstersteel.com)
  • The Qalo Men's Thin Blue Line Silicone Ring support a good cause, are comfortable and a great alternative to traditional metal rings. (adventure16.com)
  • This durable but comfortable silicone ring provides a safe alternative for anyone that wants to show their commitment but is worried about damaging or losing their expensive wedding band while in the water, on the trail or traveling the globe. (adventure16.com)
  • First introduced back in 1998, this new edition of our exclusive fully-cut crystal ring is a true showstopper. (swarovski.com)
  • Glamorous blue crystal has been exquisitely crafted with numerous glittering facets, perfectly designed to form a subtle heart motif. (swarovski.com)
  • Perfect beautiful blue crystal cross. (dreamlandjewelry.com)
  • Please type initials, name or word EXACTLY as you would like it to appear on your Belly Ring. (bodycandy.com)
  • Blue Sapphire Engagement Rings have a royal feel and are perfect for the bride who wants something a little different. (diamond-heaven.co.uk)
  • For a love that's true blue, it's hard to beat sapphire engagement rings. (applesofgold.com)
  • Our medium Skull ring can be made in a variety of solid precious metal options, simply use the drop down menus to make your selection. (stepheneinhorn.co.uk)
  • Rather, the skull line are beautiful creations with exquisite levels of design-including suture lines in the skull ring for anatomical accuracy! (stepheneinhorn.co.uk)
  • Ring by kat&beemade from 14ct gold-plated metal skull design with wraparound wiring bead embellished detail set on a slim-cut shank. (lyst.com)
  • The stunning rich blue sparkle of the sapphire is timelessly glamorous and always eye-catching, perfect for expressing a love that's deep and that never fades. (applesofgold.com)
  • Bold yet feminine, this fashion ring is all about sparkle. (zales.com)
  • When in doubt, ORDER A RING SIZER from us. (tirings.com)
  • The carbon fiber inlay makes the ring lighter than most tungsten rings, and added cobalt blue behind it gives it that little something extra. (evesaddiction.com)
  • There are no chromatophores above the ring, which is unusual for cephalopods as they typically use chromatophores to cover or spectrally modify iridescence. (wikipedia.org)
  • These rings typically appear about 6 weeks after hatching (Mäthger et al. (wikipedia.org)
  • A statement natural blue topaz trillion and halo, featuring five hand set faceted white topaz. (wolfandbadger.com)
  • It is a weak metal, so you must be extra-gentle with copper chainmaille pieces, especially those with 20- or 22-gauge rings. (bluebuddhaboutique.com)
  • This is larger by roughly 5 centimeters on average with other varieties of the blue-ringed octopus. (wikipedia.org)
  • You don't have to be blue when you wear this fun blue nose ring. (bellybling.net)
  • Don't be blue when you wear this fun blue captive bead ring. (bellybling.net)
  • These silicone rings also offer and safe and practical alternative to people who can't wear traditional wedding bands in their line of work because they reduce the risk of injury if the ring gets caught on something. (adventure16.com)
  • Please keep in mind that we will not take a ring that shows wear or that has been damaged in any way while in your possession. (tirings.com)
  • It is very comfortable to wear, The jewel faces outwards so the hinged ring looks best in 'Forward Facing' piercings like septums. (bodyjewelleryshop.com)
  • Wear this matching set as Promise rings or Wedding bands. (tirings.com)
  • The Protection Plan begins on the date of order shipment and covers most damage from normal wear and tear, moisture damage for watches and includes a ring re-sizing for rings. (jtv.com)
  • Wear it as an engagement ring, right hand fashion ring, or as an anniversary ring. (allurez.com)
  • Each ring is carefully made to sit beside other rings within this range and the stone set ones are designed so the stone section lies above the bands on either side so you can make a unique combination or wear the rings by themselves. (argenteus.co.uk)
  • This hypoallergenic Palladium Blue Sapphire ring is set in a pave setting and is available in other metals. (allurez.com)
  • The inner ring is plated in stainless steel to add extra sumptuousness to this fresh and eye-catching accessory, which suits any style from elegant to everyday. (swarovski.com)
  • I have the black and white rings. (dreamlandjewelry.com)
  • See pricing info, deals and product reviews for Kensington Orbit™ Scroll Ring Trackball, Black/Blue at Staples.co.uk. (staples.co.uk)
  • Shown here in blue, these rings can be made in a variety of colors: white, red, green, black and purple. (tirings.com)
  • How should I care for the metal in my ring? (kay.com)
  • For returned rings with engravings, there is a 20% restocking fee and for rings with precious metal inlays, there is a 35% restocking fee. (tirings.com)
  • Platinum is a very expensive and rare metal that is non-corrosive and tarnish-resistant, ensuring this nose ring will last you forever. (freshtrends.com)
  • They searched for metal ring replacement that was safe and comfortable, but found none. (officerstore.com)