title: Eimeria acervulina, E. brunetti, E. maxima, and E. necatrix: low doses of oocysts to immunize young chickens.
mesh_terms: D000818:Animals; D002645:Chickens; D003048:Coccidiosis / Q000276:immunology / Q000469:parasitology / Q000662:veterinary*; D004539:Eimeria / Q000276:immunology*; D005243:Feces / Q000469:parasitology; D007114:Immunization / Q000662:veterinary*; D008297:Male; D011201:Poultry Diseases / Q000276:immunology* / Q000469:parasitology