Crica papaya L. Leaves are potential for cancer treatment, this is due to the presence of Ribosome-inactivating proteints (RIPs), which demonstrated a cytotoxic effect on cancer cell lines. Therefore, this research was done to find out the effect of protein fraction containing RIPs isolated feom C papaya in the iduction of apoptosis on cancer cell-lines (Raji and myeloma cell-lines). The protei…