three tgf alpha-transfected nog-8 clones expressed high levels of a specific tgf alpha mrna , secreted elevated levels of tgf alpha into the culture medium ( 177-595 ng/10 ( 8 ) cells/48 h ) , exhibited an enhanced growth rate , grew aggressively as colonies in soft agar , and formed undifferentiated , invasive carcinomas in nude mice .
C1327616
secreted
C0007634
cells