In situ hybridization for the detection of the apxIV gene in the lungs of pigs experimentally infected with twelve Actinobacillus pleuropneumoniae serotypesWan-Seob Cho, Changsun Choi and Chanhee ChaeVet. Res., 33 6 (2002) 653-660DOI: https://doi.org/10.1051/vetres:2002046