title: The invariance of mutation rates in bacteriophage T4 as functions of medium pH.
mesh_terms: D000588:Amines / Q000494:pharmacology; D001483:Base Sequence; D003090:Coliphages; D005815:Genetic Code / Q000187:drug effects; D006863:Hydrogen-Ion Concentration; D006898:Hydroxylamines / Q000494:pharmacology; D009154:Mutation / Q000187:drug effects*; D011687:Purines / Q000494:pharmacology
chemical_list: D000588:Amines; D006898:Hydroxylamines; D011687:Purines