title: [Mechanism of the resistance of gram-negative bacteria to benzylpenicillin and ampicillin].
mesh_terms: D000667:Ampicillin / Q000494:pharmacology*; D002463:Cell Membrane Permeability / Q000187:drug effects; D004926:Escherichia coli / Q000187:drug effects* / Q000201:enzymology; D007709:Klebsiella / Q000187:drug effects*; D010400:Penicillin G / Q000494:pharmacology*; D010403:Penicillin Resistance; D010405:Penicillinase / Q000096:biosynthesis*
chemical_list: D000667:Ampicillin; D010405:Penicillinase; D010400:Penicillin G
vernacular_title: Mekhanizm ustoĭchivosti gramotritsatel'nykh bakteriĭ k benzilpenitsillinu i ampitsillinu.