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*  Fish physiology
Each embryo develops in its own egg. Familiar examples of ovoviviparous fish include guppies, angel sharks, and coelacanths. ... The lining of the spiral intestine is similar to that of the small intestine in teleosts and non-mammalian tetrapods. In ... Some viviparous fish exhibit oophagy, in which the developing embryos eat other eggs produced by the mother. This has been ... In such species the mother retains the eggs and nourishes the embryos. Typically, viviparous fish have a structure analogous to ...
*  Fish anatomy
The lining of the spiral intestine is similar to that of the small intestine in teleosts and non-mammalian tetrapods. In ... formed by the fusion of the paired organs in the embryo. Fish ovaries may be of three types: gymnovarian, secondary gymnovarian ... although even this forms from the fusion of paired structures in the embryo. Under a tough membranous shell, the tunica ...
*  Hox genes in amphibians and reptiles
Hox genes are a group of related genes that control the body plan of an embryo along the head-tail axis. They are responsible ... It is thought that this elasticity may allow for developmental variation across non-mammalian taxa. This is of course true for ... On the other hand, recent studies of a small number of non-mammalian taxa propose greater dissimilarity than initially ... Researchers found the results to suggest that Hox cluster expansion and transposon accumulation are common features of non-mammalian ...
*  List of MeSH codes (A16)
... embryo, nonmammalian MeSH A16.254.300.200 --- chick embryo MeSH A16.254.300.400 --- chorioallantoic membrane MeSH A16.254. ...
*  List of model organisms
Xenopus tropicalis and Xenopus laevis (African clawed frog) - eggs and embryos from these frogs are used in developmental ... used in the study of the song system of songbirds and the study of non-mammalian auditory systems. Zebrafish (Danio rerio, a ...
*  Aorta-gonad-mesonephros
The AGM region is derived from the mesoderm layer of the embryo. During organogenesis (around the fourth week in human embryos ... The formation of the AGM region has been best described in non-mammalian vertebrates such as Xenopus laevis. Shortly after ... RUNX1 knockout studies have shown a complete removal of definitive haematopoietic activity in all foetal tissues before embryo ... Furthermore, isolated organ cultures of the AGM from mice embryos can autonomously initiate hematopoietic stem cell activity, ...
*  Genetically modified fish
... the 1-cell embryo is easy to see and micro-inject with transgenic DNA, and zebrafish have the capability of regenerating their ... for the development of bio-medically important proteins Their use as indicators of aquatic pollutants Developing new non-mammalian ...
*  Mammal
In the embryo, the embryonic cloaca divides into a posterior region that becomes part of the anus, and an anterior region that ... Nonmammalian synapsids are sometimes called "mammal-like reptiles". Therapsids, a group of synapsids, descended from ... Studies on Permian coprolites suggest that non-mammalian synapsids of the epoch already had fur, setting the evolution of hairs ... Amniotic eggs, however, have internal membranes that allow the developing embryo to breathe but keep water in. Hence, amniotes ...
*  Initial acquisition of microbiota
The presence of microorganisms in both the oocytes and in the embryos of sponges has been confirmed. Many insects depend on ... Most research on vertical transmission in non-mammalian vertebrates focuses on pathogens in agricultural animals (e.g. chicken ... Microbiota may be passed on to offspring via bacteriocytes associated with the ovaries or developing embryo, by feeding larvae ... Brock, J.A.; Bullis, R. (2001). "Disease prevention and control for gametes and embryos of fish and marine shrimp". Aquaculture ...
*  Evolution of mammalian auditory ossicles
In the course of the development of the embryo, the incus and malleus arise from the same first pharyngeal arch as the mandible ... All non-mammalian amniotes use this system including lizards, crocodilians, dinosaurs (and their descendants the birds) and ... their eggs had internal membranes which allowed the developing embryo to breathe but kept water in. This allowed amniotes to ...
*  Pineal gland
Pinealocytes in many non-mammalian vertebrates have a strong resemblance to the photoreceptor cells of the eye. Evidence from ... by developmental formation of a paired structure that subsequently fuses into a single pineal gland in developing embryos of ...
*  Tectum
In non-mammalian vertebrates it serves as the main visual area of the brain, functionally analogous to the visual areas of the ... is used to describe the junction of the gray and white matter in the embryo. (ancil-453 at NeuroNames) Tectum List of regions ...
*  Preformationism
Philosopher Nicolas Malebranche was the first to advance the hypothesis that each embryo could contain even smaller embryos ad ... Ova were known in some non-mammalian species, and semen was thought to spur the development of the preformed organism contained ... Driesch's experiments on the development of the embryos of sea urchins are considered as deciding the case in favor of ... As opposed to "strict" preformationism, it is the notion that "each embryo or organism is gradually produced from an ...
*  SOX1
In non-mammalian vertebrates, loss of one SOXB1 protein results in minor phenotypic differences. This supports the claim that ... SOX1 expression is restricted to neuroectoderm by proliferating progenitor cells in the tetrapod embryo. The induction of this ...
*  Ornithology
As the embryo is readily accessible, its development can be easily followed (unlike mice). This also allows the use of ... Poultry continues to be used as a model for many studies in non-mammalian immunology. Studies in bird behaviour include the use ...
*  Fallopian tube
The early embryo requires critical development in the Fallopian tube. After about five days the new embryo enters the uterine ... In non-mammalian vertebrates, the equivalent structures are called oviducts. In a woman's body the tube allows passage of the ... Occasionally the embryo implants into the Fallopian tube instead of the uterus, creating an ectopic pregnancy, commonly known ... Li, S; Winuthayanon, W (January 2017). "Oviduct: roles in fertilization and early embryo development". The Journal of ...
*  Premaxilla
In the embryo, the nasal region develops from neural crest cells which start their migration down to the face during the fourth ... Reptiles and most non-mammalian therapsids have a large, paired, intramembranous bone behind the premaxilla called the ...
*  Cortical granule
It has been shown in both mammalian and non-mammalian animal models that cortical granule migration depends on cytoskeleton ... the exocytosis of cortical granules may also contribute towards protection and support of the developing embryo during ... Peptidylarginine deiminiase is a secretory protein within the cortical granule that contributes to regulation of the embryo's ... briefly or undergo a modification shortly after fertilization because only small amounts of p32 are present on the embryo. ...
*  Detlef Weigel
"The homeotic gene fork head encodes a nuclear protein and is expressed in the terminal regions of the Drosophila embryo". Cell ... such as the first haplotype map for a non-mammalian species. To further exploit and advance the understanding of genetic ...
*  2017 in paleontology
2017). A well-preserved, curled-up skeleton of an embryo of a marine protorosaur related to Dinocephalosaurus is described from ... 2017). A study on the anatomy of the nasal regions of the non-mammalian cynodonts Massetognathus, Probainognathus and ... Basidiomycota) based on a fossil seed with developing embryo and associated fungus in Dominican amber". Botany. 95 (1): 1-8. ... 2017). A study on the structure, morphology, and development of the large intracellular structures preserved in embryo-like ...
*  Stapes
In non-mammalian four-legged animals, the bone homologous to the stapes is usually called the columella; however, in reptiles, ... Rodriguez-Vazquez, J. F. (August 2005). "Development of the stapes and associated structures in human embryos". Journal of ...
*  Albinism in biology
... from 800 albino embryos, only 29 survived to full adulthood. Early studies on fish led some researchers to describe albinism as ... Whilst this does not state specifically that non-mammalian albino animals (or plants) are white, this can be inferred from "... ... embryo Whitespotted bamboo shark (Chiloscyllium plagiosum) Zebra shark (Stegostoma fasciatum) A study published in 2006 ... but ignore the several other pigments that non-mammalian animals have and also structural colouration. For example, "Absence of ...
*  Egg cell
While the non-mammalian animal egg was obvious, the doctrine ex ova omne vivum ("every living [animal comes from] an egg"), ... Upon germination, the embryo grows into a seedling. In the moss Physcomitrella patens, the Polycomb protein FIE is expressed in ... The resulting zygote develops into an embryo inside the ovule. The ovule in turn develops into a seed and in many cases the ... Soon after fertilisation the FIE gene is inactivated (the blue colour is no longer visible, left) in the young embryo. In algae ...
*  Brain
As the embryo transforms from a round blob of cells into a wormlike structure, a narrow strip of ectoderm running along the ... In non-mammalian vertebrates, the surface of the cerebrum is lined with a comparatively simple three-layered structure called ...
*  Germ cell
Large non-mammalian oocytes accumulate egg yolk, glycogen, lipids, ribosomes, and the mRNA needed for protein synthesis during ... In many animals, the germ cells originate in the primitive streak and migrate via the gut of an embryo to the developing gonads ... There are two mechanisms to establish the germ cell lineage in the embryo. The first way is called preformistic and involves ... In mammals, a few cells of the early embryo are induced by signals of neighboring cells to become primordial germ cells. ...
*  Italian crested newt
Many things will increase during development from embryo to adult. The main changes are blood pressure increase, an increase in ... The autonomic nervous system and chromaffin tissue: Neuroendocrine regulation of catecholamine secretion in non-mammalian ... The autonomic nervous system and chromaffin tissue: neuroendocrine regulation of catecholamine secretion in non-mammalian ... it causes various malformations in embryos and lethality in all forms of animals. The amphibian adrenal gland is responsible ...
*  Chromatophore
It is known in zebrafish embryos, for example, that by 3 days after fertilization each of the cell classes found in the adult ... Comparative Anatomy and Physiology of Pigment Cells in Nonmammalian Tissues. In: The Pigmentary System: Physiology and ... Kelsh, RN; Schmid, B; Eisen, JS (2000). "Genetic analysis of melanophore development in zebrafish embryos". Dev Biol. 225 (2): ...