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  • Title: A comparison of the responses of staphylococci and streptococci to teicoplanin and vancomycin.
    Author: Greenwood D, Bidgood K, Turner M.
    Journal: J Antimicrob Chemother; 1987 Aug; 20(2):155-64. PubMed ID: 2959642.
    Abstract:
    Continuous turbidimetric monitoring of cultures of staphylococci and streptococci exposed to teicoplanin or vancomycin revealed considerable inhibitory activity at concentrations below the conventionally-determined minimum inhibitory concentration. Teicoplanin was more active than vancomycin against low inocula, but exhibited a larger inoculum effect. A modest decline in susceptibility to teicoplanin and vancomycin could be induced by sequential exposure to the drugs. Such variants gradually reverted to susceptibility on passage in antibiotic-free broth. The morphological consequences of exposure to the two antibiotics were similar as judged by scanning electron microscopy.
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