title: [African trypanosomes: parasites with protective mechanisms].
abstract: African trypanosomes have developed protective mechanisms in order to escape from their hosts' immune attack. New cell surface antigens become sequentially expressed during a chronic infection providing the parasites continuously with immunologically altered faces. The trypanosomal genome contains a considerable repertoire of different genes coding for the surface antigens; they become separately activated and expressed by a variety of novel molecular processes. In addition, the trypanosomal cell surface participates in the protection of the parasites against non-immune defense mechanisms of the host.
authors.affiliation: Institut für Veterinärbiochemie der Freien Universität, Berlin.
authors.forename: H J
authors.initials: HJ
authors.lastname: Risse
mesh_terms: D000818:Animals; D000954:Antigens, Surface / Q000235:genetics; D005796:Genes; D006790:Host-Parasite Interactions; D014345:Trypanosoma / Q000235:genetics / Q000276:immunology*
chemical_list: D000954:Antigens, Surface
vernacular_title: Afrikanische Trypanosomen. Parasiten mit Uberraschungseffekten.