title: Immunity in heartwater. I. A preliminary note on the role of serum antibodies.
mesh_terms: D000645:Ammonium Sulfate; D000818:Animals; D000906:Antibodies; D005455:Fluorescent Antibody Technique / Q000662:veterinary; D006357:Heartwater Disease / Q000276:immunology* / Q000517:prevention & control; D007275:Injections, Intravenous; D012756:Sheep; D012757:Sheep Diseases / Q000276:immunology* / Q000517:prevention & control; D005719:gamma-Globulins / Q000008:administration & dosage / Q000302:isolation & purification / Q000627:therapeutic use
chemical_list: D000906:Antibodies; D005719:gamma-Globulins; D000645:Ammonium Sulfate