Leptospires detection in kidney, liver and uterus of cows slaughtered in Paraná State, Brazil - Silva, Francielle Gibson da; Freitas, Julio Cesar de; Anzai, Eleine Kuroki; Hashimoto, Vanessa Yumi; Giraldi, Nilson; Delbem, Ádina Cléia Botazzo; Bracarense, Ana Paula Frederico Rodrigues Loureiro; Reis, Antônio Carlos Faria dos; Vasconcellos, Silvio Arruda (Brazilian Journal of Microbiology, 2005)