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keratinocyte |
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keratinocyte [kə′rat·ən·ə‚sīt] (histology) A specialized epidermal cell that synthesizes keratin. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The epidermis is formed of Keratinocytes and acts as a barrier to exogenous substances, chemicals, loss of moisture, and pathogens. Although most skin cancers derive from either melanocytes or keratinocytes, the assay looks for physical breaks in the chromosomes of lymphocytes--nucleated blood cells--taken from skin cancer patients and cancer-free controls to estimate an individual's sensitivity to UVB. The keratinocytes proliferate to form a well-defined endophytic, flat, or exophytic nodule of tumor cells. |
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