BCL2 and neoplasm: Cell-cycle arrest at the G0/G1 phase↓↓ tumor size by 45.2%, B-cell lymphoma-2 (Bcl-2), procaspases 8 and 9 and higher levels of Bcl-2-associated X protein, apoptosis-inducing factor, cell-surface death receptor Fas and Fas ligand when compared to untreated control