highly significantP < 0.001
MTT cell proliferation assay revealed a concentration-dependent mean optic density with G3 samples showed the highest mean (4.26 ± 0.27) followed by G2, G1 and Control G4 groups (2.55 ± 0.07, 2.37 ± 0.08 and 2.33 ± 0.17, respectively) with a highly significant difference found between all studied groups (P < 0.001).