to investigate histone phosphate levels during myogenesis , proliferation ( d 1 ) , pre-fusion postmitotic ( d 2 ) and myotube ( d 3 ) stage cultured chicken myoblasts were phosphorylated in vivo with [ 32p ] orthophosphate or in vitro by incubating isolated nuclei with 32p-gamma-atp .
C0019652
histone
C0007610
nuclei