
Keywords: دی هیدروفلات ردوکتاز; ALL; acute lymphoblastic leukemia; AraC; cytosine Arabinoside; BrdU; bromodeoxyuridine; CNS; central nervous system; DG; Dorsal Ganglion; DHFR; dihydrofolate reductase; IP; intraperitoneal; LSD; Fisher's least significant difference; MTX; methotrexate;