Ounce of Prevention is a weekly column which presents recommendations for preventative services derived from The United ...

Blood group characteristics ... groups as Rh-positive or Rh-negative. Neanderthals likely had a rare and distinct Rh factor ...

Unlike other blood types, people with Rhnull blood have no Rh antigens on their red blood ... Blood type is a genetic trait. This means the blood alleles they inherit will determine their blood ...