title: Site specific recombination involved in the generation of small plasmids.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology; D004269:DNA, Bacterial; D004926:Escherichia coli / Q000235:genetics; D008854:Microscopy, Electron; D010403:Penicillin Resistance; D010957:Plasmids; D011815:R Factors; D011995:Recombination, Genetic
chemical_list: D004269:DNA, Bacterial; D000667:Ampicillin