1887

Abstract

SUMMARY: A toxic substance, which destroyed leucocytes from man but was inactive against erythrocytes, was demonstrated in cultures of four out of 110 strains of tested. The toxin, designated ‘leucocidin’, was cell-bound as a precursor toxin, exhibiting little or no toxicity. It was converted into toxin with maximum activity by various proteases including an endogenous elastase. The production of leucocidin was directly proportional to the number of bacteria and was not influenced by variations in media, iron concentration, pH or temperature. The best method for large-scale production of leucocidin was autolysis of washed bacteria.

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/content/journal/micro/10.1099/00221287-93-2-283
1976-04-01
2019-10-23
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http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-93-2-283
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