sentences:  While survivin has been shown as mentioned above to bind to only the active forms of these caspases, it is likely here that survivin inhibits the active forms of the caspases resulting from cleaving and activating more of its own proforms.Thus, survivin acts possibly by preventing such a cascade of cleavage and activation amplification from happening resulting in decreased apoptosis.In similar manner, looking at the mitochondrial pathway of apoptosis, cytochrome "c" was transiently expressed in 293 cells to look at the inhibitory effects survivin had on this pathway.