Osaka Imperial University

In 1934 the Japanese physicist Hideki Yukawa postulated the existence of yet another force particle, which he called the meson. In 1932 Yukawa began his academic career with an appointment at Osaka Imperial University, which had been founded the previous year. The discovery of the neutron and the publication of Fermi s theory started him thinking about the nature of the force that bound protons and neutrons together in an atomic nucleus. He realized that, though... 

As one of the results of the promotion policy of education for science and technology, Japanese Government established additional Imperial Universities in various places in Japan after Tokyo. They are Kyoto (Kyoto Imperial University, it took about 20 years after the estabhshment of the Imperial University of Tokyo), Sendai (Tohoku Imperial University), Sapporo in Hokkaido (Imperial University of Hokkaido), Fukuoka (Imperial University of Kyushu), Osaka and Nagoya. Owing to the promotion pohcy a relatively large amoimt of budget was provided to these imiversities and they played the role as centers of scientific researches of Japan. 

I thank all members of Dr. Nagata s laborat y in Osaka Bioscience Instimte and Osaka University Medical School for helping during my initial works. 1 am grateful to Drs. S. Nagata and H. Sakahira in Osaka University Medical School for helpful comments on the manuscript and to Dr. C. Weissmann at the Imperial College School of Medicine for supports, discussion, and encouragement. 

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