April 20, 1832 is considered the day when successful blood transfusion was first used and recorded in the annals of domestic medical practice. The manipulation was carried out in St. Petersburg by a young obstetrician Andrei Martynovich Wolf. The word “donor” itself is translated as giver, from the Latin verb donare - to give as a gift. But, as it turned out, a person who donates his tissues for free only wins in the case of blood donation.