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Keratin, type II cytoskeletal 7 also known as cytokeratin-7 (CK-7) or keratin-7 (K7) or sarcolectin (SCL) is a protein that in humans is encoded by the KRT7 gene. [5] [6] [7] Keratin 7 is a type II keratin. It is specifically expressed in the simple epithelia lining the cavities of the internal organs and in the gland ducts and blood vessels.
The α-helical domain has 310-150 amino acids and comprises four segments in which a seven-residue pattern repeats. Into this repeated pattern, the first and fourth residues are hydrophobic and the charged residues show alternate positive and negative polarity, resulting in the polar residues being located on one side of the helix.
A Toker cell is an epithelial cell with clear cytoplasm in the nipple of some women. [1] Toker cells are believed to develop from sebaceous glands. [1] They are cytokeratin 7 (CK7) positive, in contrast to squamous epithelium. [1]
- The right panel shows high magnification on a positive area, confirming adenocarcinoma, as it shows tumor cells with large nuclei and prominent nucleoli. AE1/AE3 is an antibody cocktail that is used in immunohistochemistry , being generally positive in the cytoplasm of carcinomas (cancers of epithelial origin).
Until recently the diagnostic method predominantly depended on identifying antibodies' responses that are positive for adenocarcinoma and negative for mesothelioma. [ 3 ] Cytokeratin 5/6 (CK5/6) is a biomarker that has emerged as a valuable tool in distinguishing epithelioid pleural mesothelioma from metastatic adenocarcinoma.
Moral universalism is the attempt to find a compromise between the absolutist sense of morality, and the relativist view; universalism claims that morality is only flexible to a degree, and that what is truly good or evil can be determined by examining what is commonly considered to be evil amongst all humans.
Keratin 20, often abbreviated CK20, is a protein that in humans is encoded by the KRT20 gene. [5] [6] [7]Keratin 20 is a type I cytokeratin.It is a major cellular protein of mature enterocytes and goblet cells and is specifically found in the gastric and intestinal mucosa.
Studies in animal models and humans indicate that it controls the expression of a wide range of biologically and clinically important genes. [ 5 ] [ 6 ] [ 7 ] The GATA3 transcription factor is critical for the embryonic development of various tissues as well as for inflammatory and humoral immune responses and the proper functioning of the ...