incubation of 3t3 or virally transformed 3t3 cells with four different homologues ( a1 , a2 , b1 , and b2 at 0.1 to 0.25 microgram/ml ) caused detachment and death of transformed cells after 1 to 3 days , while the nontransformed cells were almost unaffected .
C0007587
death
C0007634
cells