[The problem of tissue parasitism].
Possessing a different antigenic structure larvae of helminths have to withstand the protective reactions of their hosts in order exist in their tissues. A new phenomenon was noted in host-parasite relationships. Larvae of helminths inhibit the host's leucocyte reaction (by inhibiting chaemotaxis) and induce the formation of a capsule of specific structure by the host. The capsules represent a modified protective reaction of the connective tissue. The capsules perform two main functions. They do not pass the specific antibodies from the host's blood to a parasite. They are physiologically active; an intensive transport of nutrients passes through them to the parasite against concentration gradient, with a participation of ferments and expenditure of energy.
D000222:Adaptation, Physiological; D000818:Animals; D000937:Antigen-Antibody Reactions; D000941:Antigens / Q000276:immunology; D002634:Chemotaxis, Leukocyte; D006373:Helminthiasis / Q000276:immunology / Q000469:parasitology; D006376:Helminths / Q000276:immunology; D006790:Host-Parasite Interactions; D007109:Immunity; D007814:Larva / Q000276:immunology; D010272:Parasitic Diseases / Q000276:immunology / Q000469:parasitology*; D010587:Phagocytosis; D013601:T-Lymphocytes / Q000276:immunology
D000941:Antigens
Problema tkanevogo parazitizma.