Abstract Background Protection of pigs by vaccination against Actinobacillus pleuropneumoniae. the causative agent of porcine pleuropneumonia. is hampered by the presence of 15 different serotypes. A DIVA subunit vaccine comprised of detergent-released proteins from A. https://www.chiggate.com/trea-turner-philadelphia-phillies-autographed-major-league-baseball-on-sale/