Abstract
The excretions and secretions of Trichinella spiralis were collected by incubating the infective larvae in a nutrient fluid for 5 days after which the worms were discarded. Injections of the excretions and secretions stimulated the production of an immune response as evidenced by a more rapid loss of adult worms, stunting of adult female worms, and smaller numbers of larvae recovered from injected mice as compared with control mice.

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