1. A single injection of long-acting penicillin cures yaws (before) Publication: Produced: [not before 1960] Subject(s): ChildMothersYawsYaws -- drug therapyHealth PersonnelPenicillinsNigeriaWorld Health Organization.
2. A single injection of long-acting penicillin cures yaws (after) Publication: Produced: [not before 1960] Subject(s): ChildMothersYawsYaws -- drug therapyPenicillinsNigeriaWorld Health Organization.
3. Bacterial Protoplasts Induced By Penicillin Publication: National Academy of Sciences (U.S.), November 1956 Subject(s): Genetics, MicrobialPenicillins Archival Collection: The Joshua Lederberg Papers (Profiles in Science)