title: Immune response to Echinococcus granulosus: histological and immunocytochemical observations.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D004443:Echinococcosis / Q000276:immunology* / Q000473:pathology; D008198:Lymph Nodes / Q000473:pathology; D051379:Mice; D008807:Mice, Inbred BALB C