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Karl discovers different blood types -
Treatment for "Blue babies"
"Blue Babies," are babies that have a lack of oxygen when their born. -
First heart transplant
First heart transplant, Christiaan Barnard preformed a heart transplant of Louis Washkansky -
First artificial heart
Robert Jarvik develops first artificial heart -
Heart laser
U.S. Government approves laser that will burn away foriegn substance that is blocking blood from flowing.