Porcine CD18 mediates Actinobacillus pleuropneumoniae ApxIII species-specific toxicity Philippe G.A.C. Vanden Bergh, Laurent L.M. Zecchinon, Thomas Fett and Daniel Desmecht Vet. Res., 40 4 (2009) 33 Published online: 10 April 2009 DOI: 10.1051/vetres/2009016