Medical dictionary. 2011.

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  • Penicillin — Historically, the most famous of all antibiotics, named for the fungal mould Penicillium notatum from which it is derived. Penicillin acts by destroying the cell wall in those bacteria that are sensitive have been developed (not resistant) to its …   Medical dictionary

  • 6-aminopenicillanic acid — An important precursor in the synthesis of penicillin derivatives. By itself, it has no antibiotic activity.For structure, see under penicillin in which R = H. SYN: penicin. * * * 6 ami·no·pen·i·cil·lan·ic ac·id (ə me″no… …   Medical dictionary

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