1. Inhibitor analysis of dihydrofolate reductases from various species;Burchall;Mol. Pharmacol.,1965
2. Toward improved selectivity in cancer chemotherapy;Bertino;Cancer Res.,1979
3. Inhibition of the growth of an amethopterin-refractory tumor by dietary restriction of folic acid;Rosen;Cancer Res.,1962
4. Transport, binding and polyglutamylation of methotrexate in freshly isolated rat hepatocytes;Gewirtz;Cancer Res.,1980
5. Evidence for the cytotoxic activity of polyglutamate derivatives of methotrexate;Galivan;Mol. Pharmacol.,1980