Pease, C T Ankylosing spondylitis without B27: no evidence for gene conversion. [electronic resource] - Annals of the rheumatic diseases Dec 1988 - 1001-3 p. digital Publication Type: Journal Article ISSN: 0003-4967 Standard No.: 10.1136/ard.47.12.1001 doi Subjects--Topical Terms: FemaleGene ConversionHLA-A Antigens--analysisHLA-B Antigens--analysisHLA-B27 AntigenHumansIsoelectric FocusingMaleSpondylitis, Ankylosing--genetics