With some chemicals, above all with caustic alkalis such as sodium hydroxide, there may be necrosis of the conjunctiva with a deceptively white eye due to vascular closure, followed by sloughing of the dead epithelium.

In some tissues, including the hypothalamus, placenta, and epithelium, all cleavage sites may be used, giving rise to peptides with roles in pain and energy homeostasis, melanocyte stimulation, and immune modulation.

The Fleischer ring, caused by deposition of the iron oxide hemosiderin within the corneal epithelium, is subtle and may not be readily detectable in all cases, but becomes more evident when viewed under a cobalt blue filter.

The cell bodies of the ORNs are distributed among all three of the stratified layers of the olfactory epithelium.

This inner layer is a germinal epithelium that give rise to all epidermal cells.

It also forms the lining cells of all the glands which open into the digestive tube, including those of the liver and pancreas ; the epithelium of the auditory tube and tympanic cavity ; the trachea, bronchi, and air cells of the lungs ; the urinary bladder and part of the urethra ; and the follicle lining of the thyroid gland and thymus.

The acute phase is characterized histologically by multifocal areas of nuclear pyknosis / karyorrhexis and numerous cytoplasmic inclusion bodies in the cuticular epithelium and the subcutis of the general body surface, all appendages, gills, hindgut, esophagus and stomach.

The body consists of an outer layer of simple epithelium enclosing a loose sheet of stellate cells resembling the mesenchyme of some more advanced animals.

One study found no irritation or other pathological signs on the rectal epithelium of Symphysodon aequifasciata infested with Protoopalina symphysodonis, but stated that " most infected animals died ".

During the six years he spent in that position he published a large amount of work, including three anatomical monographs on new species of animals, and papers on the structure of the lymphatic system, the distribution of epithelium in the human body, the structure and development of the hair, the formation of mucus and pus, etc.

The epithelium of the cervix is varied.

The ectocervix ( more distal, by the vagina ) is composed of nonkeratinized stratified squamous epithelium.

The endocervix ( more proximal, within the uterus ) is composed of simple columnar epithelium.

When the endocervix is exposed to the harsh acidic environment of the vagina it undergoes metaplasia to squamous epithelium which is better suited to the vaginal environment.

At certain times of life, the columnar epithelium is replaced by metaplastic squamous epithelium, and is then known as the transformation zone.

Germinal epithelium is seen at top.

* The outermost layer is called the ovarian surface epithelium ( previously known as the germinal epithelium ).

In cultured pearls, the irritant is typically an introduced piece of the mantle epithelium, with or without a spherical bead ( beaded or beadless cultured pearls ).

The CFTR protein is present in both the lungs and the intestinal epithelium, and the mutant cystic fibrosis form of the CFTR protein prevents entry of the typhoid bacterium into the body through the intestinal epithelium.

Its lining is composed of stratified squamous epithelium, which becomes transitional near the bladder.

The vocalis muscle, main body of the VF, is covered by the mucosa, which consists of the epithelium and the lamina propria.

The top most layer comprises stratified squamous epithelium which is bordered by pseudostratified ciliated epithelium.

The luminal surface of this squamous epithelium is covered by a layer of mucus ( mucociliary blanket ) which is composed of two layers: a mucinous layer and serous layer.

HPV infects the squamous epithelium, usually of the skin or genitals, but each HPV type is typically only able to infect a few specific areas on the body.

Trypsin is the major primary hydrolytic protease and is secreted into the posterior midgut lumen without activation in the posterior midgut epithelium.

An example of a flagellate bacterium is the ulcer-causing Helicobacter pylori, which uses multiple flagella to propel itself through the mucus lining to reach the stomach epithelium.

A coelom is a cavity lined by an epithelium derived from mesoderm.

Neoplasms in this group are thought to be derived from the ovarian surface epithelium ( modified peritoneum ) or from ectopic endometrial or Fallopian tube ( tubal ) tissue.

Angiomas are benign tumors derived from cells of the vascular or lymphatic vessel walls ( epithelium ) or derived from cells of the tissues surrounding these vessels.

Ameloblasts are derived from oral epithelium tissue of ectodermal origin.

The enterochromaffin cells are derived from the same stem cells as the rest of the epithelium, and are not derived from the migratory neural crest source that provides the enteric nervous system.

Some of the visual problems associated with albinism arise from a poorly developed retinal pigment epithelium ( RPE ) due to the lack of melanin.

On one hand they act as immunodepressors, and protect the embryo from the immune system of the mother and on the other hand viral fusion proteins cause the formation of the placental syncytium in order to limit the exchange of migratory cells between the developing embryo and the body of the mother, where an epithelium won't do because certain blood cells are specialized to be able to insert themselves between adjacent epithelial cells.

Following epithelial-mesenchymal transition, cells can migrate away from an epithelium and then associate with other similar cells in a new location.

* Follicular cells flat epithelial cells that originate from surface epithelium covering the ovary

* granulosa cells-surrounding follicular cells have changed from flat to cuboidal and proliferated to produce a stratified epithelium

In these species, fresh eggs may be developing from the germinal epithelium throughout life.

They are constructed from epithelium, but they have a few muscle fibres in them, namely the vocalis muscle which tightens the front part of the ligament near to the thyroid cartilage.

* Infolding of the epithelium led to the formation of an internal system of ducts and thus to the development of a modified gallertoid from which the sponges ( Porifera ), Cnidaria and Ctenophora subsequently developed.

In contrast to the model based on functional morphology described earlier, in the Epitheliozoa concept the ventral and dorsal cell layers of the Placozoa are homologs of endoderm and ectoderm, the two basic embryonic cell layers of the eumetazoans — the digestive gastrodermis in the Cnidaria or the gut epithelium in the bilaterally symmetrical Bilateria may have developed from endoderm, whereas ectoderm is, among other things, the precursor to the external skin layer ( epidermis ).

The supply of food takes place either via a secretion from the mother directly into the uterus or via a genuine tissue connection between the epithelium of the uterus and the developing embryo, known as a placenta.

The term retinal detachment is used to describe a separation of the neurosensory retina from the retinal pigment epithelium.

respiratory therapists work with Pulmonologists in both clinical and general research of the respiratory system, ranging from the anatomy of the respiratory epithelium to the most effective treatment of pulmonary hypertension in pediatrics.

* Coelomic metaplasia: This theory is based on the fact that coelomic epithelium is the common ancestor of endometrial and peritoneal cells and hypothesizes that later metaplasia ( transformation ) from one type of cell to the other is possible, perhaps triggered by inflammation.

The glandular epithelium of the prostate differentiates from these endodermal cells, and the associated mesenchyme differentiates into the dense stroma and the smooth muscle of the prostate.

The thymic epithelium is the first to develop, and appears in the form of two flask-shape endodermal diverticula, which arise, one on either side, from the third branchial pouch ( pharyngeal pouch ), and extend lateralward and backward into the surrounding mesoderm and neural crest-derived mesenchyme in front of the ventral aorta.

Going from inside the lumen radially outwards, one passes the mucosa ( glandular epithelium and muscular is mucosa ), sub mucosa, muscular is external ( made up of inner circular and outer longitudinal ), and lastly serosa.

Secretin and cholecystokinin are released from cells in the duodenal epithelium in response to acidic and fatty stimuli present there when the pylorus opens and releases gastric chyme into the duodenum for further digestion.

* The pupillary ruffs ( crenations ) are a series of small ridges at the pupillary margin formed by the continuation of the pigmented epithelium from the posterior surface.

White babies are usually born blue-eyed since there is no pigment in the stroma, and appear blue due to scattering and selective absorption from the posterior epithelium.

The most reliable test to confirm distemper is a brush border slide / smear of the bladder transitional epithelium of the inside lining from the bladder, stained with Dif-Quick.