Detection of Leptospira spp. in semen and vaginal fluids of goats and sheep by polymerase chain reaction - Lilenbaum, Walter; Varges, Renato; Brandão, F. Z; Cortez, Adriana; Souza, S. O; Brandão, Paulo Eduardo; Richtzenhain, Leonardo José; Vasconcellos, Silvio Arruda (Theriogenology, 2008)