[ 3h ] dihydroaminopterin , but not [ 3h ] methotrexate or [ 3h ] aminopterin , was rapidly taken up by resting cell of pediococcus cerevisiae and inhibited the uptake of ( - ) -5-formyl-tetrahydrofolic acid to more than 90 % at a concentration of 25 mum .
C0025677
methotrexate
C0002583
aminopterin