Immunological experimental arthritis in pigs. IV. Reaction of the synovial membrane of the non-immunized and immunized pigs after intraarticular administration of the virus of Aujeszky's disease.

7 days after intramuscular administration of the attenuated virus of Aujeszky's disease, strain TK 300 L, it was found: in non-immunized animals--immunological arthritis with fibrinoid necrosis and abundant infiltrations from lymphoid cells; in animals of low antibodies titer--only few infiltrations from lymphoid and plasmic cells round the sub-synovial vessels; in animals of high antibodies titer--vast areas of fibrinoid necrosis, abundant infiltrations from lymphoid cells and presence of gigantic cells.