GPT and neoplasm: Tumor control rats showed increased activities of AST, ALT, ALP, LDH, γGT and 5’NT as compared to normal rats, whereas, cancer-bearing rats treated with 1,3-BPMU showed a significant reduction in AST, ALT, ALP, LDH, γGT and 5’NT activities as compared to tumor rats (p < 0.05).