title: Purine resistant mutants of Drosophila are adenine phosphoribosyltransferase deficient.
abstract: A deficiency for adenine phosphoribosyltransferase activity is the primary biochemical defect in mutants of Drosophila selected for resistance to purine-induced lethality.
authors.forename: D H
authors.initials: DH
authors.lastname: Johnson
authors.forename: T B
authors.initials: TB
authors.lastname: Friedman