Agents employed in the preparation of histologic or pathologic specimens for the purpose of maintaining the existing form and structure of all of the constituent elements. Great numbers of different agents are used; some are also decalcifying and hardening agents. They must quickly kill and coagulate living tissue.
Osmium. A very hard, gray, toxic, and nearly infusible metal element, atomic number 76, atomic weight 190.2, symbol Os. (From Dorland, 28th ed)
The technique of using FIXATIVES in the preparation of cytologic, histologic, or pathologic specimens for the purpose of maintaining the existing form and structure of all the constituent elements.
A highly reactive aldehyde gas formed by oxidation or incomplete combustion of hydrocarbons. In solution, it has a wide range of uses: in the manufacture of resins and textiles, as a disinfectant, and as a laboratory fixative or preservative. Formaldehyde solution (formalin) is considered a hazardous compound, and its vapor toxic. (From Reynolds, Martindale The Extra Pharmacopoeia, 30th ed, p717)
Methods of preparing tissue for examination and study of the origin, structure, function, or pathology.
One of the protein CROSS-LINKING REAGENTS that is used as a disinfectant for sterilization of heat-sensitive equipment and as a laboratory reagent, especially as a fixative.
The process of protecting various samples of biological material.
A polymer prepared from polyvinyl acetates by replacement of the acetate groups with hydroxyl groups. It is used as a pharmaceutic aid and ophthalmic lubricant as well as in the manufacture of surface coatings artificial sponges, cosmetics, and other products.
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 infiltrating of tissue specimens with paraffin, as a supporting substance, to prepare for sectioning with a microtome.
(T-4)-Osmium oxide (OsO4). A highly toxic and volatile oxide of osmium used in industry as an oxidizing agent. It is also used as a histological fixative and stain and as a synovectomy agent in arthritic joints. Its vapor can cause eye, skin, and lung damage.
Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.
Organic compounds containing a carbonyl group in the form -CHO.
Infections with unicellular organisms formerly members of the subkingdom Protozoa.
Product of the oxidation of ethanol and of the destructive distillation of wood. It is used locally, occasionally internally, as a counterirritant and also as a reagent. (Stedman, 26th ed)
The study of the structure of various TISSUES of organisms on a microscopic level.
Procedures for collecting, preserving, and transporting of specimens sufficiently stable to provide accurate and precise results suitable for clinical interpretation.
Picrates are a class of organic compounds that contain a picryl group, and are used in some medical treatments as antiseptics and disinfectants.
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.
A mixture of solid hydrocarbons obtained from petroleum. It has a wide range of uses including as a stiffening agent in ointments, as a lubricant, and as a topical anti-inflammatory. It is also commonly used as an embedding material in histology.
One of the three domains of life (the others being BACTERIA and ARCHAEA), also called Eukarya. These are organisms whose cells are enclosed in membranes and possess a nucleus. They comprise almost all multicellular and many unicellular organisms, and are traditionally divided into groups (sometimes called kingdoms) including ANIMALS; PLANTS; FUNGI; and various algae and other taxa that were previously part of the old kingdom Protista.
A very strong halogenated derivative of acetic acid. It is used in acid catalyzed reactions, especially those where an ester is cleaved in peptide synthesis.
That portion of the electromagnetic spectrum from the UHF (ultrahigh frequency) radio waves and extending into the INFRARED RAYS frequencies.
A nitrocellulose solution in ether and alcohol. Collodion has a wide range of uses in industry including applications in the manufacture of photographic film, in fibers, in lacquers, and in engraving and lithography. In medicine it is used as a drug solvent and a wound sealant.
A dye obtained from the heartwood of logwood (Haematoxylon campechianum Linn., Leguminosae) used as a stain in microscopy and in the manufacture of ink.
The study of parasites and PARASITIC DISEASES.
Histochemical localization of immunoreactive substances using labeled antibodies as reagents.
High molecular weight polymers containing a mixture of purine and pyrimidine nucleotides chained together by ribose or deoxyribose linkages.
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.
Liquids transforming into solids by the removal of heat.
Methods used to study CELLS.
Acrolein is a toxic and highly reactive organic compound that is produced during the breakdown of some amino acids and fatty acids, and has been linked to various health problems, including respiratory irritation and inflammation.
A mobile, very volatile, highly flammable liquid used as an inhalation anesthetic and as a solvent for waxes, fats, oils, perfumes, alkaloids, and gums. It is mildly irritating to skin and mucous membranes.
Infections of the INTESTINES with PARASITES, commonly involving PARASITIC WORMS. Infections with roundworms (NEMATODE INFECTIONS) and tapeworms (CESTODE INFECTIONS) are also known as HELMINTHIASIS.
The posterior process on the ramus of the mandible composed of two parts: a superior part, the articular portion, and an inferior part, the condylar neck.

Freeze-fracture studies of the developing cell surface. II. Particle-free membrane blisters on glutaraldehyde-fixed corneal fibroblasts are artefacts. (1/723)

We describe, in sections and by freeze-fracture, four classes of intramembrane particle (IMP)-free membrane blebs or "blisters" associated with glutaraldehyde-fixed embryonic corneal fibroblasts: (a) Single blisters attached to the cell membrane; (b) free (detached) vesicles; (c) myelin figures; (d) multivesicular protrusions which resemble the "mounds" described by others on nerve growth cones. The IMP-free, membrane-bounded blisters contain no ground cytoplasm or organelles, in contrast to blebs on trypsin-isolated fibroblasts, which we show here do contain cytoplasm and IMP-rich membranes. That the IMP-free membrane blisters in embryonic corneas are artefacts of fixation is demonstrated by (a) their absence in replicas of fibroblasts frozen and fractured without prior aldehyde fixation and (b) their absence in sections of fibroblasts fixed in a combination of glutaraldehyde and osmium tetroxide. We suggest that the addition of osmium prevents postfixation movement of membrane lipids, especially the negatively charged "fluid" lipids which others have shown are capable of considerable mobility after aldehyde fixation alone. Recent literature has implicated membrane blistering in secretory processes and in growth of nerves, but before the functional significance of such IMP-free blisters is assessed, membrane mobility of the type shown here should be taken into consideration.  (+info)

Nucleoid-independent identification of cell division sites in Escherichia coli. (2/723)

The mechanism used by Escherichia coli to determine the correct site for cell division is unknown. In this report, we have attempted to distinguish between a model in which septal position is determined by the position of the nucleoids and a model in which septal position is predetermined by a mechanism that does not involve nucleoid position. To do this, filaments with extended nucleoid-free regions adjacent to the cell poles were produced by simultaneous inactivation of cell division and DNA replication. The positions of septa that formed within the nucleoid-free zones after division was allowed to resume were then analyzed. The results showed that septa were formed at a uniform distance from cell poles when division was restored, with no relation to the distance from the nearest nucleoid. In some cells, septa were formed directly over nucleoids. These results are inconsistent with models that invoke nucleoid positioning as the mechanism for determining the site of division site formation.  (+info)

A new rapid technique for the fixation of thyroid gland surgical specimens. (3/723)

One of the main diagnostic problems in thyroid pathology is to distinguish between follicular adenoma and follicular carcinoma. Thorough sampling of the nodule's capsule is recommended in order to identify capsular invasion. However, during the hardening of the tissue, by the usual fixatives the capsule shrinks and rolls downwards and sometimes the capsule separates from the remaining tissue. The present work evaluates the use of "Lymph Node Revealing Solution" (LNRS) for the rapid fixation (2h) of different thyroid lesions as compared to that of formalin. Fifty-one unselected consecutive cases of thyroid nodules, which included various benign and malignant lesions, were examined. Each specimen was cut in two equal parts; one was fixed in LNRS, the other in formalin. Fixation in LNRS for 2 hours gave adequate results in sectioning and staining of the tissue, and excellent immunostains. Its advantage over formalin is the conservation of the natural relationship between the capsule and the rest of the tissue, on the same plane, as well as the short time required for the final diagnosis.  (+info)

Slices have more synapses than perfusion-fixed hippocampus from both young and mature rats. (4/723)

Hippocampal slices have long been used to investigate properties of synaptic transmission and plasticity. Here, for the first time, synapses in slices have been compared quantitatively with synapses occurring in perfusion-fixed hippocampus, which is presumed to represent the natural in vivo state. Relative to perfusion-fixed hippocampus, a remarkable 40-50% increase in spine number occurs in adult hippocampal slices, and a 90% increase occurs in slices from postnatal day 21 rats. Serial EM shows that all of the dendritic spines have normal synapses with presynaptic and postsynaptic elements; however, not all spine types are affected uniformly. Stubby and mushroom spines increase in the adult slices, and thin, mushroom, and branched spines increase in the immature slices. More axonal boutons with multiple synapses occur in the slices, suggesting that the new synapses form on preexisting axonal boutons. The increase in spine and synapse number is evident within a couple of hours after preparing the slices. Once the initial spine induction has occurred, no further change occurs for up to 13 hr in vitro, the longest time investigated. Thus, the spine increase is occurring during a period when there is little or no synaptic activity during the first hour, and the subsequent stabilization in spine synapse numbers is occurring after synaptic activity returns in the slice. These findings suggest that spines form in response to the loss of synaptic activity when slices are removed from the rest of the brain and during the subsequent 1 hr recovery period.  (+info)

Experience with external quality control in spermatology. (5/723)

Results are presented from participation in an external quality control (EQC) programme for semen analysis (UK NEQAS). Formalin-fixed semen samples and videotapes of motile spermatozoa were distributed four times a year over a 3-4 year period. Over the entire period there was close agreement for sperm concentration with, initially, the average of values from the other groups participating in the scheme, and later, values designated as reference values obtained from six laboratories of several chosen that consistently agreed with each other. The initial underestimation of the percentage of normal forms was abolished at the time of change in derivation of designated values and this largely eliminated the difference to establish closer agreement with the designated values. A consistent bias in the assessment of different categories of progressive sperm motility appeared to be resolved by a conscious decision to consider most spermatozoa as grade b and the exceptions as grade a, rather than the converse. Feedback of results to the technicians of the laboratory participating in an external quality control programme leads to reappraisal of subjective evaluation and to harmonization of results between laboratories.  (+info)

Polymerase chain reaction detection of Puumala virus RNA in formaldehyde-fixed biopsy material. (6/723)

BACKGROUND: Infections with hantaviruses, mainly Clethrionomys-derived Puumala viruses, are known causes of acute renal failure [hemorrhagic fever with renal syndrome (HFRS)] in western Europe. Laboratory diagnosis is primarily based on serology. At the time of clinical symptoms, viral RNA can hardly be detected in the blood or urine, indicating that polymerase chain reaction (PCR) is of little diagnostic value for these infections. Biopsy material is usually formaldehyde-fixed and, thus, regarded as poor quality for PCR applications. The aim of this study was to establish a technique to retrieve such material for laboratory diagnostic. METHODS: Formaldehyde-fixed, paraffin-embedded kidney biopsies of 14 patients with renal failure either clinically suspected for HFRS (7 cases) or caused by unknown (2 cases) or known other causes (drugs, sarcoidosis; 5 cases) were histologically investigated. An established S segment-specific PCR assay was applied to RNA isolated from the biopsies, and amplification products were verified by direct sequence determination. RESULTS: Investigations revealed a typical histopathological appearance for hantavirus infections in all seven suspected HFRS cases and one case of unknown cause. With five of the suspected HFRS cases, hantavirus-specific RNA was detected. Sequence comparison revealed a close relationship to corresponding nucleoproteins of known Puumala viruses. CONCLUSION: The established technique provides a simple and powerful tool that expands the diagnostic possibilities, especially for otherwise unidentified or retrospective cases. It further allows insight into the molecular epidemiology of HFRS-causing agents.  (+info)

Detection of translocation t(11;14)(q13;q32) in mantle cell lymphoma by fluorescence in situ hybridization. (7/723)

To assess an unequivocal diagnosis of mantle cell lymphoma (MCL), we have developed a fluorescence in situ hybridization (FISH) assay, enabling the demonstration of t(11;14)(q13;q32) directly on pathological samples. We have first selected CCND1 and IGH probes encompassing the breakpoint regions on both chromosomes. Then, we have defined experimental conditions enabling us to obtain bright clear-cut signals in all of the samples, independently of the initial fixation conditions. We have analyzed single-cell suspensions from 26 formalin-fixed, paraffin-embedded MCL samples with this set of probes. In all cases, we have found a fusion signal (ie, a t(11;14)(q13;q32) translocation) in 14% to 99% of cells (median, 87%). So far, IGH-CCND1 fusions have been detected in all of the 51 MCL patients that we have analyzed by FISH (either on paraffin-embedded tumor samples or on peripheral blood samples). Regarding the low sensitivity of other techniques used to diagnose t(11;14)(q13;q32) (ie, 70% to 75% for cytogenetics and 50% to 60% for polymerase chain reaction), our FISH assay is by far the most sensitive technique. Moreover, because of the quality of the fluorescent signals and the rapidity of the experiment, this technique is widely applicable, even in routine cytogenetics or pathology laboratories. As MCL patients are usually refractory to standard therapy, an unambiguous diagnosis is needed to propose adapted therapeutic strategies, and this highly sensitive assay may be of great value for accurate diagnosis in difficult cases.  (+info)

Mechanical properties of mesenteric arteries in diabetic rats: consequences of outward remodeling. (8/723)

Diabetes induces hemodynamic and biochemical changes that can influence mechanical properties of arteries. Structure and mechanics of mesenteric small arteries were investigated in rats with streptozotocin-induced diabetes (duration 7-9 wk). The external diameter of mesenteric artery branches was measured in control (n = 9) and diabetic (n = 7) Wistar Rp rats at baseline and during pressurization in situ (0-150 mmHg) under normal and passive smooth muscle conditions. Mean arterial pressure and mesenteric artery pressure were not significantly different. Baseline mesenteric artery diameter was larger in the diabetes-induced group (439 +/- 12 vs. 388 +/- 18 micrometers, P < 0.05). Media cross-sectional area of arteries from diabetic rats was not significantly increased (0.0149 +/- 0.0015 vs. 0.0122 +/- 0.0007 mm2). Cross-sectional compliance was significantly increased in diabetic rats at intraluminal pressures ranging from 25 to 75 mmHg (P < 0.005), whereas cross-sectional distensibility was not modified. Wall tension and circumferential wall stress were increased in diabetes. These results indicate that mesenteric small arteries of diabetic rats display eutrophic outward remodeling associated with increased wall tension and circumferential wall stress.  (+info)

Osmium is a chemical element with the symbol Os and atomic number 76. It is a hard, blue-gray metal that is highly resistant to corrosion and is used in various applications in the medical field. One of the primary uses of osmium in medicine is in the production of medical devices and implants. Osmium is used to coat surgical instruments and implants to prevent corrosion and infection. It is also used in the production of dental implants, as it is highly biocompatible and does not cause adverse reactions in the body. Osmium is also used in the production of certain types of medical imaging agents. For example, osmium tetroxide is used as a contrast agent in magnetic resonance imaging (MRI) scans. It is injected into the bloodstream and binds to certain types of cells, allowing for clearer imaging of the affected area. In addition, osmium is used in the production of certain types of cancer treatments. For example, osmium compounds have been shown to have anti-cancer properties and are being studied as potential treatments for various types of cancer. Overall, osmium has a number of important applications in the medical field, including the production of medical devices and implants, medical imaging agents, and cancer treatments.

Formaldehyde is a colorless, flammable gas with a pungent, suffocating odor. It is commonly used in the medical field as a preservative for tissues, organs, and other biological samples. Formaldehyde is also used as an antiseptic and disinfectant, and it is sometimes used to treat certain medical conditions, such as leprosy and psoriasis. In the medical field, formaldehyde is typically used in concentrations of 1-4%, and it is applied to the tissue or organ to be preserved. The formaldehyde causes the cells in the tissue to become rigid and hard, which helps to preserve the tissue and prevent decay. Formaldehyde is also used to disinfect medical equipment and surfaces, and it is sometimes used to treat wounds and skin conditions. While formaldehyde is effective at preserving tissue and disinfecting surfaces, it can also be harmful if it is inhaled or absorbed through the skin. Exposure to high concentrations of formaldehyde can cause irritation of the eyes, nose, and throat, as well as coughing, wheezing, and shortness of breath. Long-term exposure to formaldehyde has been linked to certain types of cancer, including nasopharyngeal cancer and sinonasal cancer.

Glutaral is a colorless, crystalline compound that is a derivative of glutaric acid. It is used in the medical field as a disinfectant and antiseptic, particularly for the treatment of skin and mucous membrane infections. Glutaral is also used as a preservative in some medical products, such as eye drops and contact lens solutions. It is a strong oxidizing agent and can cause skin irritation and allergic reactions in some people.

Polyvinyl Alcohol (PVA) is a synthetic polymer that is commonly used in the medical field as a water-soluble adhesive in medical tapes, dressings, and other medical devices. It is a hydrophilic polymer, meaning it is attracted to water, and is known for its biocompatibility and non-toxicity. PVA is also used as a thickening agent in various medical products, such as eye drops, nasal sprays, and oral solutions. It can help to stabilize the formulation and improve its viscosity, making it easier to apply or use. In addition, PVA has been investigated for its potential use in drug delivery systems, as it can act as a carrier for drugs and help to control their release over time. It has also been used in tissue engineering applications, as it can be used to create hydrogels that mimic the properties of natural tissue. Overall, PVA is a versatile polymer with a wide range of applications in the medical field, thanks to its unique properties and biocompatibility.

Osmium tetroxide is a highly toxic, heavy metal compound that is not commonly used in the medical field. It is a strong oxidizing agent and is used in various industrial applications, including the production of electronic components and the refining of gold and platinum. In the medical field, osmium tetroxide has been used in research studies to investigate its potential as a cancer treatment. It has been shown to selectively kill cancer cells while sparing healthy cells, making it a promising candidate for targeted cancer therapy. However, its toxicity and potential for harmful side effects have limited its use in clinical practice. It is important to note that osmium tetroxide is a highly dangerous substance and should only be handled by trained professionals in a controlled environment. Exposure to osmium tetroxide can cause severe respiratory and skin irritation, as well as damage to the liver, kidneys, and central nervous system.

In the medical field, aldehydes are organic compounds that contain a carbonyl group (-C=O) with at least one hydrogen atom attached to the carbon atom. They are often used as intermediates in the synthesis of other compounds and have a wide range of applications in medicine, including as antiseptics, disinfectants, and analgesics. Some common aldehydes used in medicine include formaldehyde, acetaldehyde, and propionaldehyde. Formaldehyde is a powerful disinfectant and preservative that is used in the preparation of tissue samples for histological analysis and in the treatment of certain medical conditions such as leprosy. Acetaldehyde is a metabolite of ethanol and is involved in the development of alcohol-related liver disease. Propionaldehyde is used as an antiseptic and disinfectant in the treatment of skin infections and wounds. However, aldehydes can also be toxic and can cause respiratory irritation, allergic reactions, and other adverse effects. Therefore, their use in medicine is carefully regulated and controlled to minimize the risk of harm to patients.

Protozoan infections are a group of diseases caused by single-celled organisms called protozoa. Protozoa are microscopic organisms that can be found in various environments, including soil, water, and the human body. They can cause a wide range of infections in humans, including gastrointestinal, respiratory, and bloodstream infections. Protozoan infections can be transmitted through various routes, including contaminated food and water, sexual contact, and contact with infected animals. Some common examples of protozoan infections include giardiasis, cryptosporidiosis, toxoplasmosis, and malaria. The symptoms of protozoan infections can vary depending on the type of infection and the severity of the illness. Some common symptoms include diarrhea, abdominal pain, nausea, vomiting, fever, headache, and fatigue. In severe cases, protozoan infections can lead to complications such as organ damage, anemia, and death. Treatment for protozoan infections typically involves the use of antiprotozoal medications, which are designed to kill or inhibit the growth of the protozoa. In some cases, supportive care such as fluid replacement and electrolyte replacement may also be necessary. Prevention of protozoan infections involves practicing good hygiene, avoiding contaminated food and water, and taking precautions when traveling to areas where these infections are common.

Acetic acid is a weak organic acid that is commonly used in the medical field for various purposes. It is a colorless liquid with a characteristic sour smell and is the main component of vinegar. In the medical field, acetic acid is used as a disinfectant and antiseptic. It is effective against a wide range of microorganisms, including bacteria, viruses, and fungi. It is commonly used to clean and disinfect medical equipment, such as scalpels, needles, and syringes, to prevent the spread of infection. Acetic acid is also used in the treatment of certain medical conditions. For example, it is used in the treatment of warts and other skin growths. It is applied topically to the affected area and can cause the wart to peel off over time. In addition, acetic acid is used in the production of certain medications, such as aspirin and other nonsteroidal anti-inflammatory drugs (NSAIDs). It is also used in the production of some types of plastics and other industrial products. Overall, acetic acid is a versatile compound with many uses in the medical field, including as a disinfectant, antiseptic, and medication ingredient.

I'm sorry, but I couldn't find any information on "Picrates" in the medical field. It's possible that you may have misspelled the term or that it is not commonly used in medicine. Can you please provide more context or clarify your question?

In the medical field, paraffin is a type of hydrocarbon that is commonly used as a lubricant and as a heat source for medical equipment. It is also used in the preparation of histological sections for microscopic examination, where it is used to embed and fix tissues for analysis. Paraffin is a white, waxy substance that is derived from petroleum and is non-toxic and non-allergenic. It is often used in combination with other substances, such as formalin, to preserve tissues and prevent decay.

Trifluoroacetic acid (TFA) is a colorless, highly corrosive liquid that is commonly used in the chemical industry as a solvent, reagent, and preservative. In the medical field, TFA is used as a chemical peel agent to remove dead skin cells and improve the appearance of the skin. It is also used in the production of certain medications and as a component in some laboratory reagents. However, TFA is highly toxic and can cause serious burns and other injuries if not handled properly. It is important to follow proper safety protocols when working with TFA in a medical or laboratory setting.

Collodion is a clear, viscous solution that was historically used in the medical field as a dressing for wounds and burns. It is made by dissolving cellulose nitrate in ether or alcohol, and then adding camphor and other ingredients to make it more flexible and pliable. Collodion was widely used in the late 19th and early 20th centuries, but its use declined in the mid-20th century due to concerns about its toxicity and the development of alternative wound dressings. Today, collodion is still used in some specialized medical applications, such as the treatment of certain skin conditions and the preservation of tissue samples for histological analysis.

Hematoxylin is a blue dye that is commonly used in histology, the study of tissue samples, to stain cell nuclei. It is a basic dye that binds to the negatively charged DNA in the nucleus, causing it to appear dark blue under a microscope. Hematoxylin is often used in combination with eosin, a pink dye that stains the cytoplasm and other cell components, to create a contrast between the nucleus and the surrounding tissue. This staining technique, known as hematoxylin and eosin (H&E) staining, is one of the most commonly used methods for examining tissue samples in the medical field.

Nucleic acids are complex organic molecules that are essential for the storage and expression of genetic information in living organisms. There are two main types of nucleic acids: DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). DNA is the genetic material that carries the instructions for the development, function, and reproduction of all living organisms. It is composed of four types of nitrogenous bases (adenine, thymine, guanine, and cytosine) that are arranged in a specific sequence to form a double-stranded helix. RNA, on the other hand, is involved in the process of gene expression. It is composed of the same four nitrogenous bases as DNA, but it is single-stranded and plays a variety of roles in the cell, including messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). Nucleic acids are important for the proper functioning of cells and are the basis of genetic inheritance. Mutations in nucleic acids can lead to genetic disorders and diseases, such as cancer, genetic disorders, and viral infections.

Alcian Blue is a group of dyes that are commonly used in the medical field for staining and histochemical analysis of tissues and cells. These dyes are acidic dyes that bind to negatively charged groups on proteins, glycoproteins, and mucopolysaccharides, which are found in many tissues and cells. In medical research, Alcian Blue is often used to stain connective tissue, such as cartilage and bone, as well as goblet cells in the respiratory and gastrointestinal tracts. It can also be used to stain mucin, a type of glycoprotein that is found in mucus and other secretions. Alcian Blue is available in a range of concentrations and pH levels, which allows researchers to selectively stain different types of tissues and cells. It is generally considered a safe and non-toxic dye, although it may cause irritation if it comes into contact with the skin or eyes.

Cytological techniques refer to the methods used to study cells, including their structure, function, and behavior. These techniques are commonly used in the medical field for the diagnosis and treatment of various diseases, including cancer. Cytological techniques involve the preparation and examination of cells, either from a biopsy or a sample of body fluid. The cells are typically stained with dyes that highlight specific structures or features, making them easier to see under a microscope. Some common cytological techniques include: 1. Pap smear: A test used to screen for cervical cancer by examining cells from the cervix. 2. Liquid-based cytology: A newer technique that uses a liquid-based sample instead of a Pap smear to improve the accuracy of cervical cancer screening. 3. Cytological analysis of body fluids: Techniques used to examine cells in body fluids, such as blood, urine, or cerebrospinal fluid, to diagnose various diseases. 4. Flow cytometry: A technique used to analyze the characteristics of cells in a sample by using fluorescent markers. 5. Immunocytochemistry: A technique used to detect specific proteins or antigens in cells by using antibodies that bind to those proteins or antigens. Overall, cytological techniques play a crucial role in the diagnosis and treatment of many diseases, and continue to evolve as new technologies and methods are developed.

Acrolein is a colorless gas with a pungent, irritating odor. It is a highly reactive compound that is produced naturally in the environment and is also formed during the incomplete combustion of organic materials, such as tobacco smoke and wood fires. In the medical field, acrolein is known to be a toxic substance that can cause a range of adverse health effects, including irritation of the eyes, nose, and throat, as well as damage to the lungs, kidneys, and other organs. It has also been linked to the development of certain types of cancer, including lung cancer and bladder cancer. In addition, acrolein has been shown to have anti-inflammatory and anti-viral properties, and it is being studied for its potential use in the treatment of certain medical conditions.

In the medical field, "ether" typically refers to diethyl ether, which is a type of inhalation anesthetic that was widely used in the past for general anesthesia. Diethyl ether is a colorless, flammable liquid with a sweet odor that evaporates easily. When inhaled, it causes unconsciousness and a loss of pain sensation, making it useful for surgical procedures. However, diethyl ether has been largely replaced by other anesthetics that are safer and more effective. It is still used in some medical settings, such as veterinary medicine and dentistry, but its use is limited due to its potential for serious side effects, including respiratory depression, cardiac arrhythmias, and central nervous system damage.

Intestinal diseases caused by parasites are a group of conditions that affect the digestive system and are caused by the presence of parasites in the intestines. These parasites can be protozoa, helminths, or other microorganisms that live in the digestive tract and cause damage to the lining of the intestine, leading to symptoms such as abdominal pain, diarrhea, nausea, vomiting, and weight loss. Some common examples of parasitic intestinal diseases include: 1. Ascariasis: caused by the roundworm Ascaris lumbricoides, which can cause abdominal pain, diarrhea, and coughing up worms. 2. Giardiasis: caused by the protozoan Giardia lamblia, which can cause diarrhea, abdominal cramps, and bloating. 3. Hookworm infection: caused by the hookworms Necator americanus and Ancylostoma duodenale, which can cause anemia, abdominal pain, and weight loss. 4. Trichomoniasis: caused by the protozoan Trichomonas vaginalis, which can cause diarrhea, abdominal pain, and nausea. 5. Schistosomiasis: caused by parasitic flatworms called schistosomes, which can cause abdominal pain, diarrhea, and blood in the stool. Treatment for parasitic intestinal diseases typically involves the use of antiparasitic medications, although in some cases, surgery may be necessary. Prevention measures include practicing good hygiene, avoiding contaminated food and water, and using insect repellent to prevent mosquito bites.

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This fixative is a good general preservative, gives a higher contrast than the ordinary osmium fixatives, and may also preserve ... Electron Microscopy of the Sperm Tail Results Obtained with a New Fixative Björn Afzelius Björn Afzelius ... Björn Afzelius; Electron Microscopy of the Sperm Tail Results Obtained with a New Fixative . J Biophys and Biochem Cytol 25 ... Micrographs of the sea urchin spermatozoa treated with the new fixative provide more detailed information on the tail structure ...
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Goldman, Morris and Brooke, Marion M. "Protozoans in stools; unpreserved and preserved in PVA-fixative" vol. 68, no. 7, 1953. ... Goldman, Morris and Brooke, Marion M. (1953). Protozoans in stools; unpreserved and preserved in PVA-fixative. 68(7). Goldman, ... Title : Protozoans in stools; unpreserved and preserved in PVA-fixative Personal Author(s) : Goldman, Morris;Brooke, Marion M ... Morris and Brooke, Marion M. "Protozoans in stools; unpreserved and preserved in PVA-fixative" 68, no. 7 (1953). ...
25% Off Fixatives, Art supplies, Drawing and Illustration, Fixatives and Sprays. Lascaux UV Fixative Matt 400ml $58.50. Lascaux ... 25% Off Fixatives, All Products, Art supplies, Drawing and Illustration, Fixatives and Sprays, Painting Accessories, Painting ... 25% Off Fixatives, All Products, Art supplies, Drawing and Illustration, Fixatives and Sprays ... 25% Off Fixatives, All Products, Art supplies, Drawing and Illustration, Fixatives and Sprays ...
A perfume fixative may help. Fixatives are used In perfumery to retain fragrance on the wearer for as long as possible by ... A perfume fixative may help. Fixatives are used In perfumery to retain fragrance on the wearer for as long as possible by ... The fixative will absorb quickly and optimize the preparation of your skin by providing an undercoat of smoothness and ... It is important to note that our fixative is NOT odorless (the smell is reminiscent of a slightly wintergreeny musk that dries ...
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Valgomed is a foot fixative that relieves bunion pain and helps realign the toes. ... Valgomed is a natural foot fixative that will provide relief and relaxation in the affected valgus gradually. Its made of ...
mediums and varnishes. mediums and varnishes. MEDIUMS and VARNISHES. AEROSPRAY UNIVERSAL fixative 400 ml.
Fixative Sprays:. Fixative sprays are used to protect pencil drawings from smudging and ensure their longevity. They create a ... Fixatives:. Fixatives are products used to protect and preserve pastel or crayon artwork by preventing smudging and preserving ... Fixative sprays come in various types, such as workable and final fixatives, offering different levels of protection and ... Fixatives can provide a matte or glossy finish and help extend the longevity of the artwork. ...
... making it the Swiss army knife of fine art fixatives. This indispensable multi-purpose fixative can be used for watercolor, ... Lascaux Lascaux Fixative can fix, seal and protect almost anything, ... Lascaux Lascaux Fixative can fix, seal and protect almost anything, making it the Swiss army knife of fine art fixatives. This ... Lascaux Fixative can fix, seal and protect almost anything, making it the Swiss army knife of fine art fixatives. This ...
Helps prevent gum irritation Ooze control tip Improves denture fit and comfort Poligrip ultra denture fixative cream allows you ... Poligrip ultra denture fixative cream has been formulated to helps prevent irritating bits of food getting under your plate. ... Poligrip ultra denture fixative cream allows you to enjoy foods you might otherwise avoid and gives you that feeling of extra ... Poligrip ultra denture fixative cream has been formulated to helps prevent irritating bits of food getting under your plate. ...
Fixative Spray 400ml Can from £9.48 Broad Canvas. Oxfordshires No 1 Art and Craft shop ... A value for money fixative for pastel, charcoal and drawing. Ideal for all your sketching needs and at a fantastic price too! ...
The essentials you need to run your lab, every day.
MTN PRO Matte Fixative is a matte transparent lacquer developed to fix and protect against dust, humidity and contact of ... Decrease quantity for Matte Fixer Spray Fixative Increase quantity for Matte Fixer Spray Fixative ... MTN PRO Matte Fixative is a matte transparent lacquer developed to fix and protect against dust, humidity and contact of ...
... are currently handling personal injury claims as a result of neurological problems following the use of denture fixative cream. ... Although GlaxoSmithKline have now removed zinc from their products it was used by both within their denture fixative cream to ... Again in most cases once an individual has ceased using a denture fixative cream with zinc and received copper supplementation ... clients in relation to personal injury claims as a result of neurological problems following the use of denture fixative cream ...
Decrease quantity for Daler Rowney Artist Fixative Spray (150ml) Increase quantity for Daler Rowney Artist Fixative Spray ( ...
For the first time, use a small amount. Use more if needed. Large quantities can cause overflow. It may take some effort to find the right amount for your denture. Apply once a day for strong hold. If you have to use the cream more than once a day, seek the advice of your dentist. Application: 1.Clean and dry the denture. Apply Corega Firming Cream in a few strips, as shown in the diagram, not too close to the ends of the denture. 2. Rinse your mouth. Insert the denture in place, hold firmly and bite for a few seconds to ensure a good fit. Subtraction: 1. Rinse the spout with warm water. Slowly move the denture in a circular motion. 2. Remove the cream residue from the denture and spout with warm water and a soft toothbrush ...
Be the first to review "Sennelier HC10 universel fixative Anti-UV" Cancel reply. Your email address will not be published. ...
Light Hold Fixative Spray. 150 ml.. + Økologisk kokosnøddeolie. + Chiakerne- og Sacha inchiolie. En glansfikserende hårspray ...
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Fancy Hair Wax Styling Cream Broken Hair Finishing Fixative Gel Anti-Frizz Rated 3.5/5 based on 11 customer reviews ... Fancy Hair Wax Styling Cream Broken Hair Finishing Fixative Gel Anti-Frizz. * Product SKU: 28990477-china-strawberry ... Model Number: Hair Fixative Gel. Ingredient: Broken Hair Cream. Applicable Hairstyle: Universal. Hair Styling Cream: Broken ... Model Number: Hair Fixative Gel. Ingredient: Broken Hair Cream. Applicable Hairstyle: Universal. Hair Styling Cream: Broken ...
  • This novel fixative, BE70, significantly improves DNA, RNA, and protein biomolecule integrity in histological samples compared to traditional fixatives. (nih.gov)
  • Herein, we describe the phosphate-buffered ethanol 70% (BE70) fixative. (nih.gov)
  • Unfortunately, most fixative agents can damage or destroy nucleic acids (RNA and DNA) and damage proteins during the fixation process, thereby potentially impairing diagnostic assessment of tissue. (nih.gov)
  • Photographic fixatives are chemicals used to develop photographs. (medlineplus.gov)
  • Best Fixative Spray For Pencil Drawings is the thing that you'll have to pay full price. (couponupto.com)
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  • An EPA risk assessment (EPA, 2014) reported that TCE constituted 80% to 100% of three aerosol spray fixative products for arts and crafts uses and other products intended for use as cleaners or degreasers in automobile or home maintenance. (cdc.gov)
  • iDye Fixative is a cationic resin used as a post treatment for dyed fabrics. (materialgirlsquilt.com)
  • This crystal-clear fixative uses the acrylic resin Paraloid ® B72 as its main ingredient. (schmincke.de)
  • iDye Fixative can also be used with other negatively charged dyes such as Procion MX, Concentrated Vinyl Sulphon, Remazol dyes, and commercially dyed fabrics that may bleed. (materialgirlsquilt.com)
  • Researchers in the National Institutes of Health (NIH) have developed an improved tissue fixative solution that is formaldehyde-free. (nih.gov)
  • Researchers in the National Cancer Institute's Laboratory of Pathology have developed an improved tissue fixative solution that is formaldehyde-free. (nih.gov)
  • These require fresh frozen tissue and unusual fixatives, in addition to immunohistochemical stains. (medscape.com)
  • The backpack icon for Ritzy Rick's Hair Fixative has an entire model render of Sniper still intact. (teamfortress.com)
  • We use fixatives to render things dead. (nih.gov)
  • Aries' AriFix products are a comprehensive line of dye fixatives for anionic dye stuffs and pigments . (arieschem.com)
  • The "Contamination Control Fixative List" provides a listing of many of the fixatives that are commonly used in the U.S, along with the vendor information, common uses for the fixatives, and notes about the products. (dndkm.org)
  • iDye Fixative increases wash fastness, stops bleeding, and helps prevent back staining. (materialgirlsquilt.com)
  • [Undocumented] The Ritzy Rick's Hair Fixative now shows up when using the "Inspect" key on allies. (teamfortress.com)
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  • Collect, preserve and permanently stain intestinal parasites with a copper-based fixative, part of system which comes with industry standard color-coding and sporked caps. (fishersci.com)
  • Collect, preserve and permanently stain intestinal parasites with copper-based Thermo Scientfic™ PVA Modified Fixative Single Vial, part of a complete collection of quality fecal transports which come with industry standard color-coding and easy-to-use sporked caps. (fishersci.com)
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  • A Buffered Alcohol-Based Fixative for Histomorphologic and Molecular Applications. (nih.gov)
  • Apply a small amount of Polident Denture Fixative in short strips, not too close to the denture edges. (polident.in)