[The morphological changes in the body of guinea pigs in response to the administration of different Coxiella burnetii antigens].

In this work the evaluation of macro- and micro-changes in the tissues of guinea pigs to the injection of inactivated antigens of C. burnetii is presented. The injection of these antigens in a dose of 50 micrograms induced only an insignificant reaction at the site of injection; in the brain of the animals, as well as in all examined internal organs, no visible pathological changes were present. During the first two weeks after the injection of the antigens signs of irritation of the reticuloendothelial system and hyperplasia of lymphoid tissue in T- and B-dependent zones were observed in the regional lymph nodes of the experimental animals. These changes became moderate by day 28.