Species differences among dihydrofolate reductases as a basis for chemotherapy.
D000818:Animals; D001419:Bacteria / Q000378:metabolism; D005492:Folic Acid / Q000378:metabolism; D005493:Folic Acid Antagonists / Q000494:pharmacology*; D008727:Methotrexate / Q000494:pharmacology; D011743:Pyrimidines / Q000494:pharmacology; D051381:Rats; D013045:Species Specificity
D005493:Folic Acid Antagonists; D011743:Pyrimidines; D005492:Folic Acid; D008727:Methotrexate