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Identifies squamous and transitional epithelia, mesothelium, and ductal cells, as well as their corresponding carcinomas. Basal cells in complex epithelia, such as normal prostate glands, typically express CK5, and some nonsquamous carcinomas may also show positivity.
Formalin-fixed, paraffin-embedded (FFPE) tissue block or cell block - OR - 3 unstained slides for each test requested plus 1-2 additional unstained slides cut at 4µm
Use cold pack for transport. Make sure cold pack is not indirect contact with specimen.