retinoid treatment of f9 and pcc4 cells caused an increase in camp-pk activity as measured by histone phosphorylation , as well as increases in the amount of the ri and rii regulatory subunits of the camp-pks , as quantitated by photoaffinity labeling with 8-azido-cyclic-32p-amp , in both the soluble and plasma-membrane fractions .
C0007634
cells
C0007603
plasma-membrane