James Harrison, whose blood contained a rare antibody used to make lifesaving medication, is credited with saving the lives of more than 2 million babies with his nearly 1,200 donations. He died “peacefully in his sleep” at his nursing home on Feb. 17, Lifeblood announced Saturday.

James Harrison, who was credited with saving 2.4 million babies through blood plasma donations over six decades, has died at 88.