title: Comparison of two challenge strains used to test the potency of Brucella abortus vaccines.
mesh_terms: D000818:Animals; D001428:Bacterial Vaccines / Q000592:standards*; D002003:Brucella abortus / Q000276:immunology*; D002006:Brucellosis / Q000209:etiology; D005260:Female; D006168:Guinea Pigs
chemical_list: D001428:Bacterial Vaccines