A polymerase chain reaction for the detection of Brucella canis in semen of naturally infected dogs - Keid, Lara Borges; Soares, Rodrigo Martins; Vasconcellos, Silvio Arruda; Chiebao, Daniela Pontes; Megid, Jane; Salgado, Vanessa Riesz; Richtzenhain, Leonardo José (Theriogenology, 2007)