I'm VERY rare
I'm AB- but both my parents are positive (AB- is like 1% of the population and to be neg with both parents positive is like 3% of the population)
HLB27 neg
CRP on the high side of normal
x-ray shows squaring of the thoracic
MRI shows narrowing, erosion and scelerosis of both SI joints

my photos http://www.pbase.com/gardengirl13 avatar is the tattoo I got shortly after getting my AS diagnosis, it says "to be in good health"