title: Ankylosing spondylitis and Klinefelter's syndrome: does the X chromosome modify disease expression?
mesh_terms: D000328:Adult; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D006801:Humans; D007621:Karyotyping; D007713:Klinefelter Syndrome / Q000150:complications / Q000235:genetics*; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging / Q000473:pathology; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012446:Sacroiliac Joint / Q000000981:diagnostic imaging / Q000473:pathology; D013167:Spondylitis, Ankylosing / Q000150:complications / Q000000981:diagnostic imaging / Q000235:genetics* / Q000473:pathology; D014960:X Chromosome