Detection of transforming sequences in human melanomas and leukemias.

DNA extracted from fresh solid human melanoma tumors and untreated acute myeloid leukemic cells was used in two assays designed to detect oncogenes, based on the transfection of murine NIH 3T3 fibroblasts followed by selection of transformed cells in low serum concentration or induction of tumors in athymic mice. Ras and non-ras oncogenes were detected.