Tomizo Yoshida

Tomizo Yoshida (Japanese吉田 富 三; * February 10, 1903, † 27 April 1973 ) was a Japanese physician ( pathology) and cancer researcher.

Yoshida studied medicine at the Tokyo Imperial University, where he received his doctorate in 1927 and then worked as an assistant for pathology. In 1929 he became a member of the Sasaki Institute of Kyōundō Hospital (杏 云堂 病院, Eng. Kyoundo Hospital) in Tokyo, whose director he was last seen. He was also director of the Institute of the Japanese Foundation for Cancer Research.

Mid-1930s, he pointed with his boss, the founder of the institute Sasaki Takaoki, the carcinogenic effect of the dye Biebrich scarlet (or more precisely of its active ingredient o- aminoazotoluene ) to. They could generate through regular oral administration of liver cancer in rats and mice, the first evidence of such carcinogenic in an internal organ.

He taught at the Medical School of Nagasaki, the Tohoku Imperial University and the University of Tokyo.

In 1963 he received the Robert Koch Medal.