title: Isolation and characterization of mutants of bacteriophage T4 resistant to folate analogs.
mesh_terms: D003090:Coliphages / Q000201:enzymology / Q000254:growth & development / Q000302:isolation & purification*; D003470:Culture Media; D004352:Drug Resistance, Microbial; D004926:Escherichia coli; D005492:Folic Acid / Q000494:pharmacology*; D006358:Hot Temperature; D009154:Mutation; D009996:Osmotic Fragility; D010641:Phenotype; D011739:Pyrimethamine / Q000494:pharmacology; D013762:Tetrahydrofolate Dehydrogenase / Q000378:metabolism; D014227:Triazines / Q000494:pharmacology; D014295:Trimethoprim / Q000494:pharmacology
chemical_list: D003470:Culture Media; D014227:Triazines; D005492:Folic Acid; D014295:Trimethoprim; D013762:Tetrahydrofolate Dehydrogenase; D011739:Pyrimethamine