Species Specificity of the Immunogenic Complexes of the Tapeworm Hexacanth Embryo

Abstract

IN a previous article¹ evidence was reported supporting the hypothesis that at least two immune responses occur against larval tæniid tapeworms in the intermediate host; and that these responses can be elicited by a single parenteral injection of homologous activated embryos in previously unexposed animals. The initial response appears to occur before the penetration of the hexacanth embryo through the intestinal barrier, and the later response occurs at the site of election against the growing metacestode.