Immunological mechanisms involved in the protection against intestinal taeniosis elicited by oral immunization with Taenia solium calreticulin

► Seric IgG and fecal IgA antibodies increased after immunization and after challenge. ► Goblet cell hyperplasia developed in mucosa surrounding parasite implantation sites. ► IL-4 and IFN-γ increased mRNA levels in mucosa of immunized hamsters. ► Impaired tapeworm development and prompt expulsion caused by unfavorable environment.