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. 1977 Dec;30(12):1093-7.
doi: 10.7164/antibiotics.30.1093.

Possible beta-lactamase activities detectable in infective clinical specimens

Free article

Possible beta-lactamase activities detectable in infective clinical specimens

G Masuda et al. J Antibiot (Tokyo). 1977 Dec.
Free article

Abstract

Biological beta-lactam antibiotic-inactivating activities were detected in bacteriuria and suppurating pleural fluids. Clinical specimens were sterilized with membrane filters and the amounts of ampicillin and/or cephalothin which were being inactivated by 1 ml of each filtrate were determined. In general, filtrates which originally yielded Klebsiella sp. tended to show activity against ampicillin; whereas those yielding Enterobacter sp. and Pseudomonas aeruginosa showed activity against cephalothin.

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