title: In vivo staining of synovial tissue for rheumatoid knee.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000473:pathology*; D005260:Female; D006801:Humans; D007717:Knee; D008297:Male; D008751:Methylene Blue; D008875:Middle Aged; D013194:Staining and Labeling; D013583:Synovial Membrane / Q000473:pathology*
chemical_list: D008751:Methylene Blue