most important is still the association of hla b 27 with ankylosing spondylitis ( bekhterev 's disease ) which stimulated a new line of research and helped to detect the projection of antigen into all so-called rheumatic diseases which have in addition to affected peripheral joints inflammatory change of the si synchrondrosis and segmentary signs of ankylosing spondylitis .
C0022417
joints
C0038013
ankylosing spondylitis