the purpose was both to compare etoposide with methotrexate ( mtx ) in a combination chemotherapy regimen otherwise consisting of vincristine ( vcr ) , lomustine ( ccnu ) , and cyclophosphamide ( ctx ) and to evaluate a treatment design based on cell kinetic observations suggesting enhanced sensitivity to etoposide three to six days after administration of vcr , ccnu , and ctx .
C0279452
etoposide
C0015133
etoposide