EBAG9 and Recurrent tonsillitis: RCAS1 immunoreactivity was observed in the palatine tonsils of patients with chronic tonsillitis (Fig. 3) and in 60 % of the lymphatic tissue samples as dispersed cells, which were identified as macrophages, in the germinal centers of lymphatic tissue and in all samples of the reticular epithelium of the tonsillar crypts.