The Sami (or Saami)
In northern Scandinavia (Lapland), 24% of people are HLA-B27 positive, while 1.8% have associated ankylosing spondylitis. A small group (<0.5%) of people …
What is Rh null?
Rh null individuals have no Rh antigens (no Rh or RhAG) on their red blood cells. As a consequence of …