1887

Abstract

SURMMARY

Strains of which produced large amounts of toxin (e.g. 8) were found to be non-lysogenie, but they contained a cytoplasmic toxinogenic factor designated as T. After infection with phage they produced less toxin. It is possible to remove the phage from the lysogenic strains without affecting the T factor by treatment with small amounts of acriflavine. When treated with larger amounts of acriflavine the T factor was also removed, rendering the strain non-toxinogenic. The toxin-inducing phages can be converted into non-toxinogenic phages by treatment with small amounts of acriflavine. After passage through the 8 strains these phages revert to toxin-inducing ability. Similarly, the naturally occurring, non-toxinogenic phage can be made to induce toxin production. This indicates that the role of phage in diphtheria toxin production is to transduce the T factor.

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/content/journal/micro/10.1099/00221287-40-3-421
1965-09-01
2024-05-03
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