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Description
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. In immunohistochemistry, antibodies to KRT20 can be used to identify a range of adenocarcinoma arising from epithelia that normally contain the KRT20 protein. For example, the protein is commonly found in colorectal cancer, transitional cell carcinomas and in Merkel cell carcinoma, but is absent in lung cancer, prostate cancer, and non-mucinous ovarian cancer. It is often used in combination with antibodies to CK7 to distinguish different types of glandular tumor.
Immunogen
Recombinant human KRT20 (1-424aa) purified from E.coli.
Other Names
Keratin type I cytoskeletal 20, Keratin, type I cytoskeletal 20, CD20; CK-20; CK20; K20; KRT21