[Review on my scientific career: red blood cell, thrombosis, standardization]

To mark my retirement from Kyushu University I would like to review my scientific career in this article. I started my scientific career in 1968 as a graduate student of Department of Biochemistry Kyushu University Faculty of Medicine with Professor Shigeki Minakami. Since then for almost 40 years, I have been working on (i) the metabolism and function relationship of red blood cells, (ii) the pathogenesis of Japanese thrombophilia and (iii) the standardization of clinical laboratory measurement in nationwide. I will review these subjects in this article.