title: Origins of aztreonam resistance.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001398:Aztreonam; D004352:Drug Resistance, Microbial; D004754:Enterobacter / Q000187:drug effects*; D004755:Enterobacteriaceae / Q000187:drug effects*; D006801:Humans; D001618:beta-Lactamases / Q000096:biosynthesis
chemical_list: D000900:Anti-Bacterial Agents; D001618:beta-Lactamases; D001398:Aztreonam