title: [Intraspecies variability in Eimeria tenella].
mesh_terms: D000818:Animals; D002645:Chickens / Q000276:immunology / Q000469:parasitology; D003048:Coccidiosis / Q000469:parasitology; D003429:Cross Reactions; D004539:Eimeria / Q000276:immunology / Q000472:pathogenicity*; D014644:Genetic Variation; D007114:Immunization; D012098:Reproduction; D013045:Species Specificity
vernacular_title: Vnutrividovaia izmenchivost' Eimeria tenella