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Alternatively, when too many cells accumulate, crowding triggers their death by activation epithelial cell extrusion. [19] [20] Here, cells fated for elimination are seamlessly squeezed out by contracting a band of actin and myosin around and below the cell, preventing any gaps from forming that could disrupt their barriers. Failure to do so ...
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IL-20 has a broad range of functions and is involved in a variety of immune and non-immune processes in the body. [5] For example, IL-20 is involved in the process of wound healing, proliferation of epithelial cells, prevention of apoptosis of epithelial cells, [5] regulation of differentiation of keratinocytes during inflammation, the expansion of multipotential hematopoietic progenitor cells ...
Thyroid follicular cells (also called thyroid epithelial cells or thyrocytes [1]) are the major cell type in the thyroid gland, and are responsible for the production and secretion of the thyroid hormones thyroxine (T 4) and triiodothyronine (T 3).
Epithelial polarity is one example of the cell polarity that is a fundamental feature of many types of cells. Epithelial cells feature distinct 'apical', 'lateral' and 'basal' plasma membrane domains. Epithelial cells connect to one another via their lateral membranes to form epithelial sheets that line cavities and surfaces throughout the ...
Another important cell type is the pulmonary neuroendocrine cell. These are innervated cells that only make up around 0.5% of the respiratory epithelial cells. [7] The ciliated cells are columnar epithelial cells with specialized ciliary modifications. The ciliated cells make up between 50 and 80 per cent of the epithelium. [8]
Major function of cTECs is to positively select those T cells that are capable to recognize and interact with MHC molecules on their surface [3]. Once T cell precursors enter the thymic cortex, they start their transformation from double negative stages (T cell without surface expression of CD4 and CD8 co-receptors) to a double positive stage (T cell with surface expression of both co ...
Among them, 20 are epithelial genes and the remaining 10 are specific for trichocytes. All cytokeratin chains are composed of a central α-helix-rich domain (with a 50 to 90% sequence identity among cytokeratins of the same type and around 30% between cytokeratins of different type) with non-α-helical N- and C-terminal domains.