from 0 to 144 h after castration , polyadenylated rna from the tumors was analyzed by northern blotting for the expression of genes associated with cell maintenance ( beta-actin and alpha-tubulin ) , cell growth and differentiation ( c-fos and c-myc ) , and cell stress and death ( heat shock 70 and trpm-2 ) .
C0007589
differentiation
C0085301
c-fos