adult rat hepatocytes in primary culture , which show various liver functions , did not show any mitosis at confluent cell density , although they entered the s phase and remained in the g2 phase , judging by cytofluorometry , when insulin and epidermal growth factor ( egf ) were added to 2-day cultures ( tomita , y. , nakamura , t. , & ichihara , a . ( 1981 ) exp . cell res . 135 , 363-371 ) .
C0079396
g2 phase
C0007634
cell