upon exposure to the phorbol ester 12-0-tetradecanoyl-phorbol-13-acetate ( tpa ) , balb/c 3t3 cells exhibited a maximal volume decrease of 20 % , while mutant cells shrunk by only 7 % , suggesting that regulation of cell volume , at least four exposure to a tumor promoter , is impaired in mutant cells compared to parental 3t3 cells .
C0031586
phorbol
C0039654
phorbol