Production of "Asao toxin" by Aeromonas strains isolated from feces and drinking water.


Cultures of Aeromonas species were tested for production of a toxin recently purified by Asao et al. (T. Asao, Y. Kinoshita, S. Kozaki, T. Uemura, and G. Sukaguchi, Infect. Immun. 46:122-127, 1984) and described as a hemolysin with enterotoxic and cytotoxic activity. The toxin was produced by only 63% of Aeromonas sobria strains and by 93% of Aeromonas hydrophila strains. Also, 54% of A. hydrophila strains produced another cytotoxic entity.

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