title: Selection analysis of populations of vaccine strains of Brucella.
mesh_terms: D000818:Animals; D002004:Brucella Vaccine; D002003:Brucella abortus / Q000472:pathogenicity*; D002006:Brucellosis / Q000276:immunology*; D006168:Guinea Pigs; D014774:Virulence
chemical_list: D002004:Brucella Vaccine