Rabbit Anti-Human Cytokeratin 8 monoclonal antibody for IHC-P. Keratin 8 belongs to the type B (basic) subfamily of high molecular weight keratins and exists in association with keratin 18. Keratin 8 is primarily found in the non-squamous epithelia. It is present in hepatocellular carcinomas and the majority of adenocarcinomas and ductal carcinomas, but it is absent in squamous cell carcinomas.