the more complete exploration of ( i ) homotypic and heterotypic cellular interactions , ( ii ) the spontaneous transformations sometimes observed in cultured cells , ( iii ) the mode of action of cytotoxic agents , ( iv ) the multiple metabolic effects of viral infection , and ( v ) the conditions necessary for the maintenance of specialized function in cultured cells , can be expected to throw light on the basic mechanisms underlying such complex processes as differentiation , senescence , and cancer .
C0007634
cellular
C0007589
differentiation