a substantial reversal of the growth-inhibitory effect of alpha-difluoromethylornithine was produced by a number of polyamines not normally found in mammalian cells , including the spermidine analogues aminopropylcadaverine and sym-homospermidine , which were partially converted into their respective spermine analogues by addition of an aminopropyl group within the cell .
C0037871
analogues
C0037874
analogues