exposure of various cell types ( rat-1 fibroblasts , bovine adrenocortical cells , human lymphoid cells ) to nanomolar concentrations of tpa , resulted in a rapid , apparent loss of cellular protein kinase c content , when the enzyme was assayed by its phospholipid and ca2+-dependent histone ( h1 ) -kinase activity , following solubilization and deae-cellulose chromatography isolation .
C0016030
fibroblasts
C0007634
cellular