Friedkin, M Empirical vs. rational approaches in cancer chemotherapy. [electronic resource] - Annals of the New York Academy of Sciences Nov 1971 - 209-13 p. digital Publication Type: Journal Article; Review ISSN: 0077-8923 Subjects--Topical Terms: AnimalsEnterococcus faecalis--drug effectsEscherichia coli--enzymologyFolic Acid--chemical synthesisFolic Acid AntagonistsLeukemia, Experimental--drug therapyMethyltransferases--antagonists & inhibitorsMiceNeoplasms--drug therapyThymine NucleotidesUracil Nucleotides