these observations suggest that : ( 1 ) expression of t antigen was not affected by the level of cellular preparedness for entry into s phase , i.e. , it did not depend on cellular functions directly involved in the preparedness , and ( 2 ) t antigen induced cellular dna synthesis , at least in part , by a mechanism similar to that of serum-induced dna synthesis .
C0007634
cellular
C0080129
for