1. The F factor carries an operon of more than 16 × 106 daltons coding for deoxyribonucleic acid transfer and surface exclusion;Achtman,1974
2. Transcription in E. coli of R plasmids repressed and derepressed for conjugal transfer;Alton,1978
3. A multipurpose cloning system: Construction and characterization;Bolivar;Gene,1977
4. Nature of ColE1 plasmid replication in the presence of chloramphenicol;Clewell;J. Bacteriol,1972
5. Nonchromosomal antibiotic resistance in bacteria: Genetic transformation of Escherichia coli by R-factor DNA;Cohen,1972