GSTM1 and neoplasm: Effect of MEAC on tumor volume (ml), tumor weight (g), viable (Cells×107 cell/mL) and nonviable cell count (Cells×107 cell/mL), median survival time (MST), percentage increase life-span (%ILS) and hematological parameters like RBC (cells×106/μL), WBC (cells×103/μL) and Hb content (g/dL) in DLA cells bearing mice