Wednesday, 3 October 2012

Antibiotics

Antibiotics are substances that inhibit the growth of microorganisms (anti- metabolites ) or their replication (a bacteriostatic effect). They were traditionally obtained by extracting them from cultures of microbes. However, most drugs on the market today are semisynthetic derivatives of natural products. Sulfa drugs, discovered in the 1930s, were the first antimicrobial agents put into clinical use.
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