endogenous adenosine 3',5 ' -monophosphate ( camp ) levels in mastocytoma p-815 cells , synchronized either at the g1/s transition by amethopterin- or double thymidine-block or in mitosis by colcemid block , were highest during late s and early g2 phases and lowest during mitosis .
C0007634
cells
C1517341
g1/s transition