A barrister, a vet or a singer.

A private detective.

A drunk woman who threw epic dinner parties.

A paediatrician, then I was like, I can’t dissect frogs! Then I fell in love with making things and understanding how things work.

I strongly feel that this is, that I am able to receive this award because of John Gurdon and also many other researchers in the field. This field has a long history, starting with John Gurdon. So I feel very lucky. I may have played some important role in this long history, but it was not myself who initiated this field. So that’s my feeling right now.

we can select one gene out of those 20,000 genes, and completely destroy that one particular gene so that we can understand the function of that particular gene. I got very interested in that technology. It was 1992 or 1993 when I graduated from my Ph.D. school. So I decided to study — I decided to learn about knockout mouse technology. But at that time in Japan, only a few scientists were working on knockout mouse technology

So I think failure is important in my career.

A book also pushed me to become a medical doctor. I was deeply inspired by Torao Tokuda, a physician who founded a hospital group in the 1970s that tried to revolutionize the Japanese medical care system.

I got very interested in so-called “knockout mouse” technology. Knockout mouse is a way to study the function of genes. You know, both human and mouse have approximately 20,000 genes. With knockout mouse technology, we can select one gene out of those 20,000 genes, and completely destroy that one particular gene so that we can understand the function of that particular gene. I got very interested in that technology. It was 1992 or 1993 when I graduated from my Ph.D. school. So I decided to study — I decided to learn about knockout mouse technology. But at that time in Japan, only a few scientists were working on knockout mouse technology. That’s why I decided to move to the States, San Francisco

In Japan, however, I found myself suffering from Post America Depression or PAD. The environment for researchers in Japan was quite different in many ways from that in the U.S. At the medical school, very few scientists showed interest in the basic biology of mouse ES cells, and there was little thought-provoking discussion with my colleagues. Some of my colleagues advised me to work on something more related to medicine. Furthermore, I could not get enough funding and had to change the cages of the numerous mice by myself every week. What was worse, the Nat1 work was being rejected by many journals. I felt lonely and depressed, and I was about to give up my career as a scientist and return to the path of physician.