Department of Anatomy and Comparative Pathology;
University of Córdoba;
14071 Córdoba;
Spain;
CICAP-Food Research Centre;
Pozoblanco;
14400 Córdoba;
Spain;
Porcine; reproductive; and; respiratory; syndrome; Antigen; presenting; cells; Dendritic; cells; Immune; response; Major; histocompatibility; complex; classⅡ; CD80/86; Cell; death; Apoptosis;