title: [Histological and immunological investigation of the maxillary sinus in chronic sinusitis].
mesh_terms: D002908:Chronic Disease; D004724:Endoscopy; D005336:Fiber Optic Technology; D006801:Humans; D007122:Immunoelectrophoresis; D008443:Maxillary Sinus / Q000276:immunology* / Q000473:pathology; D009092:Mucous Membrane / Q000276:immunology; D012852:Sinusitis / Q000276:immunology* / Q000473:pathology