biological evaluation of 6 , 7 , 11a , and 11b for inhibition of dihydrofolate reductase ( dhfr ) isolated from l1210 cells and for growth inhibition and transport characteristics toward l1210 cells revealed 6 to be less potent than methotrexate in the inhibition of dhfr and cell growth .
C0007634
cells
C0007595
cell growth