epithelial layer वाक्य
उदाहरण वाक्य
मोबाइल
- In normal early embryonic development, the outer epithelial layer contains cytotrophoblast cells, a stem cell type found in the trophoblast that later differentiates into the fetal placenta.
- The cells comprising an epithelial layer are linked via semi-permeable, tight junctions; hence, this tissue provides a barrier between the external environment and the organ it covers.
- The normal epithelium abruptly transitions into a narrow zone of rapidly thickening epithelial layers, made up of rapidly multiplying cells ( Shope et al . 1933 ).
- Studies using the electron microscope showed that the electrical resistance of epithelial layers depends on the complexity and number of filaments within the tight junction transmembrane protein complexes.
- "' Podocytes "'are epithelial layers, the name "'visceral epithelial cells "'usually refers specifically to podocytes, which are specialized epithelial cells that reside in the visceral layer of the capsule.
- One proposed mechanism is that tuberculous infection in the lungs results in erosion of the epithelial layer of alveolar cells and the spread of infection into a pulmonary vein.
- The back surface is covered by a heavily pigmented epithelial layer that is two cells thick ( the iris pigment epithelium ), but the front surface has no epithelium.
- These complexes, which help regulate cell growth in addition to creating and maintaining epithelial layers, are known as adherens junctions and they typically include at least cadherin, ?-catenin, and ?-catenin.
- Cortactin is activated via phosphorylation, by tyrosine kinases or serine / threonine kinases, in response to extracellular signals like growth factors, adhesion sites, or pathogenic invasion of the epithelial layer.
- The back surface is covered by a commonly, heavily pigmented epithelial layer that is two cells thick ( the iris pigment epithelium ), but the front surface has no epithelium.
- Epithelial layers contain no blood vessels, so they must receive nourishment via diffusion of substances from the underlying connective tissue, through the basement membrane . Cell junctions are well-employed in epithelial tissues.
- The chief doctor initiated a postmortem examination, in which superficial and bleeding damages of the epithelial layer were detected spread all over the back, especially on the protruding parts of the back, the back of the head and the upper arm.
- For instance, when an epithelial layer is complete and the adherens junctions indicate that the cell is surrounded, ?-catenin may play a role in telling the cell to stop proliferating, as there is no room for more cells in the area.
- Mutations in three of the proteins in the complement cascade have been identified in patients with atypical HUS . Several chemotherapeutic drugs have also been shown to cause damage to the epithelial layer by reducing the ability for the cells to produce prostacyclin, ultimately resulting in chemotherapy-associated HUS, or C-HUS.
- The first study of perlecan expression during embryonal development found that the protein was first expressed during development of the cardiovascular system, and later correlates with maturation of the majority of tissues in the body, i . e . separation of epithelial layers from endothelia and stroma by basement membranes.
- First of all, by binding to cadherin receptor intracellular cytoplasmic tail domains, it can act as an integral component of a protein complex in adherens junctions that helps cells maintain epithelial layers . ?-catenin acts by anchoring the actin cytoskeleton to the junctions, and may possibly aid in contact inhibition signaling within the cell.
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