08-29-2007, 07:29 PM
Ankylosing spondylitis is a chronic inflammatory arthritis affecting the spine and sacroiliac joints. 95% of Caucasian patients are positive for the HLA-B27 haplotype; whereas, 7% of all Caucasians are positive. This is evidence for:
A Association of ankylosing spondylitis with the B27 allele of the HLA-B locus.
B Linkage of ankylosing spondylitis to the HLA-B locus.
C Neither.
A Association of ankylosing spondylitis with the B27 allele of the HLA-B locus.
B Linkage of ankylosing spondylitis to the HLA-B locus.
C Neither.