Rei Yoshii

Rei Yoshii (吉井怜, Yoshii Rei?) is a Japanese actress. She came down with acute myelogenous leukemia in 2000, but thanks to a marrow donation from her mother, recovered miraculously. Her blood type changed from blood type A to blood type O (see Japanese blood type theory) from being under the influence and became sterile.

source by http://en.wikipedia.org/wiki/Rei_Yoshii