title: Quick-changing trypanosomes elude antibody.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000954:Antigens, Surface / Q000235:genetics*; D006801:Humans; D051379:Mice; D014345:Trypanosoma / Q000235:genetics* / Q000276:immunology
chemical_list: D000954:Antigens, Surface