[Comparison of the distribution sites and diagnostic significance of three antibodies as the melanoma markers].

S-100 and its subunits have subsequently been shown to be present in a wide variety of human neoplastic tissues. Three antibodies, monoclonal S-100, polyclonal S-100 and HMB-45, were used for comparison of the positive rates of different sites of melanomas. The results showed that HMB-45 was positive for those melanoma cells in epidermis and negative for those in dermis. Monoclonal S-100 was negative for melanoma cells in epidermis and positive for those in dermis. They are useful for the diagnosis of melanoma in surgical pathology.