Influence of age and purpose for testing on the cut-off selection of serological methods in bovine neosporosisGema Álvarez-García, Esther Collantes-Fernández, Eduardo Costas, Xabier Rebordosa and Luis Miguel Ortega-MoraVet. Res., 34 3 (2003) 341-352DOI: https://doi.org/10.1051/vetres:2003009