Cytotoxic Activity of Partially Purified Escherichia Coli Alpha Haemolysin
نویسندگان
چکیده
منابع مشابه
Salmonella typhimurium strains carrying haemolysin plasmids and cloned haemolysin genes from Escherichia coli.
Like all other Salmonella typhimurium strains examined, the smooth variants SF1397 (LT2) and 1366 and also their semi-rough and rough derivatives are non-haemolytic. Nevertheless, two haemolysin (Hly) plasmids of E. coli belonging to the inc groups incFIII,IV (pSU316) and incI2 (pHly152) were able to be introduced into these strains by conjugation and stably maintained. A considerable percentag...
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Entero-invasive Escherichia coli (EIEC) and shigellae were tested for contact-haemolysin (CH) with red blood cells (RBCs) of guinea-pig, rabbit, rat, mouse, monkey, man, sheep and chicken; all bacteria showed the best lysis with guinea-pig RBCs. The best culture medium for CH activity of shigellae was tryptic soy broth, and for EIEC it was casamino acid-yeast extract broth with 1 mM CaCl2. CH p...
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The ultrastructure of the purified and lyophilized endotoxin from Escherichia coli O111 was observed by ultrathin sectioning. Onion-like globular membrane structures were observed in addition to rod-like and ribbon-like structures, indicating the existence of a globular membrane structure even in the dried state.
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ژورنال
عنوان ژورنال: Journal of Medical Microbiology
سال: 1982
ISSN: 0022-2615,1473-5644
DOI: 10.1099/00222615-15-1-11