Obituary In Memory Of Professor Sadaaki Iwanaga, 1933-2020

On Sunday June 21, 2020, our beloved teacher and mentor Professor Sadaaki Iwanaga passed away in Fukuoka, Japan, at the age of 87. He was a pioneer who made immense contributions to our understanding of blood coagulation factors and hemolymph clotting system of the horseshoe crab. He was born in Tokyo, Japan on January 5, 1933. During his high school education, he was an avid baseball player full of energy and enthusiasm. Professor Iwanaga lists losing the final of a regional qualifying round as one of the most serious blunders of his life.