Comparison of agglutinating and neutralizing antibodies to serovar hardjo in sows immunized with two commercial whole culture polivalent anti-leptospira bacterins - Soto, Francisco Rafael Martins; Pinheiro, Sonia Regina; Morais, Zenaide Maria; Gonçales, Amane Paldês; Azevedo, Sérgio Santos de; Bernardi, Fernanda; Camargo, Sebastião Rodrigues; Vasconcellos, Silvio Arruda (Brazilian Journal of Microbiology, 2008)