the effects of equimolal doses of cyclophosphamide ( cy ) , isophosphamide ( ip ) , 4-methylcyclophosphamide ( 4-mcy ) , and phosphoramide mustard ( pm ) on murine hematopoietic spleen colonies and adoptively transferred antibody-forming cells in vivo were compared .
C0010583
cyclophosphamide
C0020823
isophosphamide