on the basis of the present findings and the recent work regarding control of the expression of genetic potentialities in various types of cells , it was concluded that the carcinoembryonic antigens represent cellular constituents which are repressed during the course of differentiation of the normal digestive system epithelium and reappear in the corresponding malignant cells by a process of derepressive-dedifferentiation .
C0007634
cellular
C0007589
differentiation