TY - SER AU - Mineiro,A.L.B.B. AU - Vieira,R.J. AU - Costa,E.A. AU - Santos,R.L. AU - Gonçalves,L.M.F. AU - Carvalho,S.M. AU - Bomfim,M.R.Q. AU - Costa,F.A.L. TI - Serology, polymerase chain reaction and histopathology for leptospirosis in samples collected at slaughter from dairy cows of Parnaíba region, state of Piauí, Brazil KW - BOVINO KW - DOENÇA ANIMAL KW - LEPTOSPIROSE KW - BACTÉRIA KW - HISTOPATOLOGIA KW - VACA LEITEIRA KW - ABATEDOURO ER -