six drugs , three of which are considered to be active against human breast cancer [ melphalan ( pam ) , cyclophosphamide ( ctx ) , and 5-fluorouracil ( fura ) ] and three of which have failed to demonstrate activity against human breast cancer [ n-phosphonacetyl-l-aspartate ( pala ) , cytarabine ( ara-c ) , and 6-thioguanine ( tg ) ] , were tested at optimal weekly doses in ( balb/-cfc3h x dba/8 ) f1 ( cd8f1 ) mice bearing spontaneous , autochthonous breast tumors averaging 300 mg .
C0016360
5-fluorouracil
C1458155
breast tumors