title: ULTRAMICROSCOPIC STRUCTURE OF THE RHEUMATOID NODULE.
mesh_terms: D001168:Arthritis; D001172:Arthritis, Rheumatoid; D001706:Biopsy; D004550:Elbow; D004583:Electrons; D008853:Microscopy; D008854:Microscopy, Electron; D010336:Pathology; D012218:Rheumatoid Nodule
keywords: ARTHRITIS, RHEUMATOID; BIOPSY; ELBOW; MICROSCOPY, ELECTRON; PATHOLOGY