Fig. 3From: Attenuated Actinobacillus pleuropneumoniae double-deletion mutant S-8∆clpP/apxIIC confers protection against homologous or heterologous strain challengePathological changes of the lungs of pigs infected with A. pleuropneumoniae. Groups of pigs were inoculated with different doses of S-8 and S-8△clp△apxIIC. At 14 days post-infection, all pigs were euthanized and lungs were collected and subjected to pathological examinationBack to article page