Ampicillin is a penicillin derivative that prevents bacterial cell wall synthesis. Ampicillin is effective against both Gram (+) and (-) bacteria. Resistance to ampicillin is conferred by the bla gene which encodes β-lactamase that cleaves the β-lactam bond of the antibiotic. Ampicillin is commonly used to select for ampicillin resistant plasmid bearing strains of bacteria.|Ready-to-use 100 mg/ml Ampicillin Sodium Solution
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