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  • Title: Attempts to quantity Clostridium botulinum type A toxin and antitoxin in serum of two cases of infant botulism in Japan.
    Author: Takahashi M, Noda H, Takeshita S, Fujiwara T, Nakanoin H, Mizunoya T, Sakaguchi G.
    Journal: Jpn J Med Sci Biol; 1990 Dec; 43(6):233-7. PubMed ID: 2101138.
    Abstract:
    Serum samples taken from two infant botulism cases during hospitalization were titrated for botulinum toxin by both the intraperitoneal (ip) injection method and the score method in mice. By the ip method, in which death is the only parameter, such low levels of toxin as lower than 4 ip LD50/ml may not be titrated even though the surviving mice show abdominal palsy. By the score method based on the degree of abdominal palsy, such low levels of toxin as 1.1 and 0.8 ip LD50/ml were detected in specimens of one of the patient's serum. No antitoxin was demonstrated in either case of infant botulism by applying the score method. It is not known whether spontaneous recovery from infant botulism is due to the antitoxin production.
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