(If there are no antigens at all on the surface of the red blood cells, all three possible antibodies are present in the blood plasma: A, B and Rh antibodies.). The blood type notation O Rh-indicates which antigens and antibodies are present in the blood.
There were 2,473 billionaires in the world, as of Wealth-Xâs last count through 2015. That was a 6.4 percent increase in billionaires from the year before. But who these billionaires are and what theyâre like is more difficult to discern.
492 people out of the 1,645 billionaires on the 2014 Forbes list are US citizens, Oxfam pointed out. Aside from Slim Helu and Ortega-who are from Mexico and Spain, respectively-all the billionaires in the top ten are Americans.