“Harrison donated blood and plasma a whopping 1,173 times, according to Lifeblood, every two weeks between 1954 and 2018.”

James Harrison donated plasma 1,173 times over 64 years. His antibodies went into more than 3 million anti-D doses. Australian law made him stop at 81. Fewer than 200 donors now carry the supply, so researchers are trying to make his antibody in a lab.