title: The effect of age on the natural immunity of cattle to Babesia divergens.
mesh_terms: D000367:Age Factors; D000818:Animals; D001152:Arsenicals / Q000494:pharmacology; D001404:Babesiosis / Q000276:immunology*; D002417:Cattle; D002418:Cattle Diseases / Q000276:immunology*; D004912:Erythrocytes / Q000382:microbiology; D005260:Female; D006400:Hematocrit; D006452:Hemoglobinometry; D007109:Immunity; D007275:Injections, Intravenous; D013156:Splenectomy
chemical_list: D001152:Arsenicals