however , experiments involving skin fibroblasts from fpc patients showed certain of these cells to grow in semi-solid medium following treatment with the tumour promoter 12-o-tetradecanoylphorbol-13-acetate ( tpa ) alone , although the pattern of migration of the parent cell population in collagen gels was unchanged and they were non-tumorigenic in nude mice .
C0032580
fpc
C0007634
cells