[1] Univ Estadual Oeste Parana, Engn & Exact Sci Ctr, BR-85870650 Foz Do Iguacu, PR, Brazil
[2] Univ Fed Parana, Dept Vet Med, R Funcionarios 1450, BR-80035050 Curitiba, Parana, Brazil
[3] Univ Estadual Londrina, Dept Prevent Vet Med, BR-86057970 Londrina, Parana, Brazil
[4] Univ Fed Parana, Dept Cell & Mol Biol, Av Cel Francisco H dos Santos S-N, BR-81531980 Curitiba, Parana, Brazil
[5] Purdue Univ, Coll Vet Med, Dept Comparat Pathobiol, W Lafayette, IN 47907 USA
[6] Univ Estadual Paulista UNESP, Biotechnol Inst, Al Tecomarias S-N, BR-18607440 Botucatu, SP, Brazil