Tomizo Yoshida (吉田 富三, Yoshida Tomizō; 1903–1973) was a prominent Japanese pathologist, famous for discovering the Yoshida sarcoma. In addition, he is known for demonstrating the chemical-induced hepatocarcinogenesis in rats with his mentor Takaoki Sasaki. Yoshida received the Imperial Prize of the Japan Academy twice (1936 and 1953) as well as the Robert Koch Gold Medal (1963).
Source: “Tomizo Yoshida”, English Wikipedia (CC BY-SA 4.0), excerpt