Abstract

Chrysaora venom was antigenic to rabbits with complement fixing antibodies and protective factors against the lethal, hemolytic and dermonecrotic factors being formed. The thermal stabilities of the lethal, hemolytic and dermonecrotic factors of nettle venom were different, suggesting that an identical particle did not produce these three actions. Complement fixing antibodies were demonstrated in guinea pigs repeatedly stung by nettle medusae. The appearance of a cutaneous eruption after contact with nettle tentacles could not be blocked by intradermal injection of hyperimmune sera, however actively immunized animals did not develop an eruption after stinging.

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