Reaction Of Staphylococcus Bacteria To Penicillin Photograph by John Durham/science Photo Library

Reaction Of Staphylococcus Bacteria To Penicillin

by John Durham/science Photo Library

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Title

Reaction Of Staphylococcus Bacteria To Penicillin

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John Durham/science Photo Library

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Photograph - Photograph

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Penicillin resistance in Staphylococcus. Petri dish cultures of two strains of Staphylococcus aureus bacteria, comparing the action of a penicillin antibiotic. Bacterial growth appears opaque and grey on the surface of the growth medium. A white pellet of penicillin drug is seen in the centre of each dish. At left, one bacterial strain shows sensitivity to the penicillin drug by forming a clear zone of inhibited growth around the pellet. At right, a second strain of bacteria shows resistance to the penicillin and its growth is not inhibited by the drug pellet. Staphylo- coccus aureus is a bacteria which causes boils, abscesses, and urinary tract infections in humans.

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February 21st, 2021

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