after needing 13 liters of blood for a surgery at the ag

After needing 13 liters of blood for a surgery at the age of 13

After needing 13 liters of blood for a surgery at the age of 13, a man named James Harrison pledged to donate blood once he turned 18. It was discovered that his blood contained a rare antigen which cured Rhesus disease. He has donated blood a record 1,000 times and saved 2,000,000 lives.