tokens: In mice rendered anemic and leukopenic by the administration of AZT for 28 days in drinking water ( 1 . 5 mg / mL ) , the continued administration of AZT plus daily BAU ( 300 mg / kg , orally ) partially reversed AZT - induced anemia and leukopenia ( P less than . 05 ) , increased peripheral reticulocytes ( to 4 . 9 % , P less than . 01 ) , increased cellularity in the marrow , and improved megaloblastosis .