The microscopic appearance of synovial membranes in peripheral joints in ankylosing spondylitis.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D013167:Spondylitis, Ankylosing / Q000473:pathology*; D013583:Synovial Membrane / Q000473:pathology*; D013997:Time Factors