Characterization of Genes Specifying Ampicillin Resistance in Bacterial Isolates Using a Single-strand Specific Nuclease for Analysis of Plasmid DNA-DNA Duplexes Laufs, R. and Fock, R.,, 111, 233-237 (1979), doi = https://doi.org/10.1099/00221287-111-1-233, publicationName = Microbiology Society, issn = 1350-0872, abstract= , language=, type=