title: Experimental eosinophilia in domestic fowls and ducks following horse serum stimulation.
abstract: Multiple intraperitoneal injections of horse serum given to domestic fowls at five different ages resulted in eosinophilia in 55% of adults and in 36% of the younger birds, the highest individual eosinophil level reached being 50% of the differential white cell count. The primary eosinophilic response in fowls was between injections 7 and 36 and there was a secondary response between injections 32 and 72. Horse serum injections produced an eosinophilia in 88% of adult ducks with a maximum individual level of 31% of the differential white cell count. In ducks, primary and secondary eosinophilic responses occurred at injections 13 and 28 respectively.
mesh_terms: D000367:Age Factors; D000818:Animals; D000941:Antigens / Q000008:administration & dosage / Q000009:adverse effects; D002645:Chickens; D004372:Ducks; D004802:Eosinophilia / Q000209:etiology / Q000662:veterinary*; D004804:Eosinophils / Q000166:cytology; D005260:Female; D006736:Horses / Q000276:immunology; D007958:Leukocyte Count / Q000662:veterinary; D008297:Male; D011201:Poultry Diseases / Q000209:etiology*
chemical_list: D000941:Antigens