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An enzyme preparation inactivating all penicillins and cephalosporins
  1. Pamela M. Waterworth
  1. Department of Microbiology, University College Hospital, London

    Abstract

    Commercial penicillinases vary in their capacity to destroy penicillinase-resistant penicillins and cephalosporins. A new freeze-dried preparation containing both beta-lactamase I and II was found to inactivate all penicillins and cephalosporins at levels above those likely to be encountered in clinical specimens.

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