Antibodies to melanoma antigens, such as clones PNL2 and KBA.62, are useful for the identification of melanoma in immunohistochemistry. PNL2 detects a fixative-resistant melanocyte antigent and allows for staining after decalcification or melanin bleaching. It is used to label neoplastic cells in primary melanomas. KBA.62 also detects a melanoma-associated antigen, and reacts strongly with both benign and malignant melanocytic proliferations and is useful for diagnosing primary and metastatic melanoma, including desmoplastic melanoma. References: Mod Pathol. 2003 May;16(5):481-90, PMID: 12748255; Journal of Clinical Pathology 1995;48:826-831, DOI: 10.1136/jcp.48.9.826; Hum Pathol. 2008 Aug;39(8):1136-42, PMID: 18495211; J Invest Dermatol. 2005 Feb;124(2):412-8, PMID: 15675962