Ken Hashimoto
... that 15 future professors of medicine in Japan worked in Ken Hashimoto's American laboratory?
... that 15 future professors of medicine in Japan worked in <b id="mwBMA"><a href="./Ken_Hashimoto" id="mwBME" rel="mw:WikiLink" title="Ken Hashimoto">Ken Hashimoto</a></b><span about="#mwt58" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"`s","href":"./Template:`s"},"params":{},"i":0}}]}' id="mwBMI" typeof="mw:Transclusion"><span typeof="mw:Entity">'</span>s</span> American laboratory?