The pertinent negative markers include histiocytic markers (CD163, CD14, CD1a, langerin), FDC markers (CD21, CD23, CD35, clusterin, CXCL13), hematolymphoid markers (CD45, CD3, CD20, CD79a), vascular markers (CD31, CD34), melanoma markers (melanA, SOX10, HMB45, S100), and others (ALK, CD30). The gene discussed is CD79A; the disease is melanoma.