sequential changes in cell proliferation and cellular phenotype during hepatocarcinogenesis induced in rats with n-nitrosomorpholine were investigated by autoradiographic determination of the [ 3h ] thymidine-labelling index in morphologically defined focal lesions and extrafocal hepatic tissue at different times between 4 and 48 weeks after withdrawal of the carcinogen ( stop model ) .
C0596290
cell proliferation
C0007634
cellular