A survey of the SIgA content in saliva, serum and pharyngeal mucosa with lymphoid tissue (PMLT) of chronic granular pharyngitis patients was conducted by a double antibody PEG radio-immune method. These data were compared with those from a healthy control group. Result shows that SIgA in patients with chronic granular pharyngitis had dissociation of saliva, serum and PMLY. There was low salivary SIgA level but higher levels in serum and PMLT. These data suggest that the saliva and serum immunoglobulin pools are under separate regulation.
