1887

Abstract

SUMMARY: The isolation, from sheep, of strains of the Bosworth type of is recorded; it is proposed to designate this type as type E.

The toxicity of culture filtrates of type E after short growth periods is increased by treatment with crude trypsin preparations; no such increase can be demonstrated when the filtrates are from growths older than 5–7 hr. The toxin which is activated in these filtrates is the toxin iota. It appears that type E strains elaborate prototoxin convertible by enzymes into iota toxin proper.

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/content/journal/micro/10.1099/00221287-3-1-148
1949-01-01
2020-01-26
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