sentences:  Moreover, normal non-cancerous cells transfected in the same way mentioned above showed no significant reduction in GFP expression.This is implying that, in normal cells, survivin promoter is not active, and, thus, the siRNA will not be expressed under an inactive survivin promoter.As it is known that survivin is over-expressed in most cancers, which may be contributing to the cancer cells' resistance to apoptotic stimuli from the environment.