c-erbB.2/neu transcripts from the nude mice tumors were of normal size.     ///    "In order to characterize the mechanism of activation of the c-erbB.2/neu oncogene, we isolated and analyzed this gene from one of the tumors. "    ///    The c-erbB.2/neu gene was identified in two tumors and two ras oncogenes in two other tumors. 