1 If you have type B antigens on the surface of your red blood cells, you also have anti-A antibodies in your plasma. 2  If you have type A and type B antigens on the surface of your red blood cells, you do not have antibodies to A or B antigens in your plasma.
As of 2016, there are 540 billionaires in the US (out of 1,810 in the world). Here are the top 50, according to Business Insider: Bill Gates.
Thanks to family inheritances, family businesses and technology startups, there seem to be more young billionaires today than at any point in history. The youngest billionaire in the world comes in at just over 24 years old, with the 10th youngest being 31 years old. 1. Evan Spiegel