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Antibacterials Antibacterials are drugs that inhibit the growth of, or kill, microorganisms that cause infectious diseases. These drugs have a grater effect on bacteria then they do on human cells, hence, they are selective. However, since they are ineffective against normal body cells, they cannot be used against viruses but can only be used against bacteria. Antibodies, produced by the body's defence mechanism protect the body against infection. When bacteria multiply faster then can be neutralised by the body's defences, they produce infectious diseases. Antibiotics aid white blood cells by preventing bacteria from multiplying, either by inhibiting cell division or by directly killing bacteria. History Fleming had accidentally discovered a mould containing Penicillium notatum in 1928. He concluded that the mould growing must have inhibited bacterial growth by producing a compound that he calls penicillin. Noting its antibacterial qualities, he tested its effectiveness as an antiseptic in treating open wounds and wrote...

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