There Are Millions of Blood Types

The video explains the complexity of blood types, highlighting the role of antigens in defining them. It covers the ABO and RH blood group systems, emphasizing the vast number of potential blood types due to over 600 known antigens. The video also discusses rare blood types like RH null and the importance of blood compatibility in transfusions. It concludes with a look at the microscopic world of blood cells and promotes a related channel exploring microscopic life.

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