title: Introduction of Radioactive Sulfur (S35) Into the Penicillin Molecule by Biosynthesis.
authors.forename: S F
authors.initials: SF
authors.lastname: Howell
authors.forename: J D
authors.initials: JD
authors.lastname: Thayer
authors.forename: L W
authors.initials: LW
authors.lastname: Labaw
mesh_terms: D010406:Penicillins; D011851:Radioactivity; D013455:Sulfur; D013462:Sulfur Radioisotopes