(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.
The 50 richest people on earth. The wealthiest 50 people in the world control a staggering portion of the world economy: $1.46 trillion â more than the annual GDP of Australia, Spain, or Mexico. That's according to new data provided to Business Insider by Wealth-X, which conducts research on the super-wealthy.