-Alexis Welin 11th grade, February 28, 2017
One in seven lives entering hospitals needs blood. People that are in car accidents, organ transplants, trauma patients, bone marrow transplants, burn victims, gets up to two- hundred pints of blood each month. There are 4 main blood groups: A, B, AB and O, of which group O is the most common (47% of population).People with blood type O positive have an Rh antigen as well as A and B antigens present in the plasma. Type O is the most common blood type and is often sought out for blood donation as well because type O blood can be donated to people of any blood types without fear of rejection. O negative is the universal donor of red blood cells.
The blood type is determined by proteins called antigens found on the surface of red blood cells. If you have the antigen A on the red blood cells then you have got type A blood. More than forty thousand pints of blood are being transfused daily in the United State and Canada. One pint of blood saves three lives. They save lives putting out donation and giving that blood to the hospitals.