The enzyme-linked immunosorbent assay using the "double-sandwich" technique was utilized to determine Clostridium botulinum type E toxin. With this technique, about 80 mouse intraperitoneal 50% lethal doses of toxin could be detected. Cross-reaction was hardly observed with C. botulinum type A and B toxins. No cross-reaction was observed with culture supernatants of C. botulinum type C or other Clostridium strains. In all probability this was due to the high specificity of the antiserum prepared aginst the toxic component of type E toxin.
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Notermans et al. (1979) studied this question.
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