title: Antigenic variation in syringe passaged populations of Trypanosoma (Trypanozoon) brucei. 1. Rationalization of the experimental approach.
mesh_terms: D000941:Antigens; D014644:Genetic Variation; D014346:Trypanosoma brucei brucei / Q000276:immunology*
chemical_list: D000941:Antigens