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Immunohistochemistry for CK7 of a metastatic undifferentiated carcinoma to a lymph node. Because the keratin-7 antigen is found in both healthy and neoplastic cells, antibodies to CK7 can be used in immunohistochemistry to distinguish ovarian and transitional cell carcinomas (staining positive) from colonic and prostate cancers (negative), respectively.
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]
In 2006 a new systematic nomenclature for mammalian keratins was created, and the proteins previously called cytokeratins are simply called keratins (human epithelial category). For example, cytokeratin-4 (CK-4) has been renamed keratin-4 (K4). [ 3 ]
Overall, keratin type 2 plays a crucial role in maintaining the strength and integrity of the skin, hair, and nails. Mutations in keratin genes can lead to various genetic disorders that affect these tissues, such as epidermolysis bullosa simplex, a rare condition characterized by blistering and erosion of the skin and mucous membranes. [3]
Keratin monomers assemble into bundles to form intermediate filaments, which are tough and form strong unmineralized epidermal appendages found in reptiles, birds, amphibians, and mammals. [ 3 ] [ 4 ] Excessive keratinization participate in fortification of certain tissues such as in horns of cattle and rhinos , and armadillos ' osteoderm . [ 5 ]
GLP-1 drugs used for weight loss involve all kinds of side effects—good and not-so-good—that may or may not strike the average user. (Reminder that there are many of these meds now. GLP-1s ...
The Texans beat the Chargers in the wild card round of the 2025 NFL playoffs. Here's a look at who Houston will play next.
Immuocytochemical analysis of GATA3 protein in breast cells is a valuable marker for diagnosing primary breast cancer, being tested as positive in up to 94% of cases. It is especially valuable for estrogen receptor positive breast cancers but is less sensitive (435-66% elevated), although still more valuable than many other markers, for ...