General Information: Actinobacillus pleuropneumoniae serovar 7 str. AP76 is a clinical isolated from a pig lung. This organism is an obligate parasite of pigs. The bacterium colonizes and invades the porcine lower respiratory tract and can survive phagocytosis by macrophages, eventually resulting in the death of the macrophage cell. Three RTS toxins, which result in cell damage, are produced by this organism.