Isolation of a cured strain from Corynebacterium diphtheriae PW8.
نویسندگان
چکیده
A nonlysogenic, non-toxinogenic strain was isolated from the PW8 strain of C. diphtheriae by two-step ultraviolet induction. This strain was lysed by phages derived from the PW8 strain but not by beta phages from the C7(beta) strain. When this cured strain was lysogenized with phages from the PW8 strain, toxin production by the resulting lysogens was about a half or a quarter of that of the parent strain PW8.
منابع مشابه
Mutants of Corynebacterium diphtheriae PW8 that produce toxin in medium with excess iron.
Two mutants that produce toxin in medium with excess iron were isolated from the PW8 strain of Corynebacterium diphtheriae. These mutants produced as much toxin in medium containing excess iron (3 mug of Fe2+ per ml) as did the parent PW8 strain in iron-depleted medium, and they will be very useful for easy production of toxin.
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متن کاملPark-Williams number 8 strain of Corynebacterium diphtheriae.
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ورودعنوان ژورنال:
- Infection and immunity
دوره 25 3 شماره
صفحات -
تاریخ انتشار 1979