The peer review by experts for the "Science" Journal typically involves two colleagues. According to regulations, the editor Lewis also passed the article to another expert—Professor Fukunaga Kunzan from the University of Tokyo in Japan, one of the top three world-renowned experts in the stem cell field. The three papers involving skin expansion technology were essentially research within the stem cell or cloning field.
Under the normal review process, Professor Fukunaga wouldn't have seen these three papers so soon, as there were many other manuscripts queued up before Yang Ping's. Professor Fukunaga was always meticulous and would review each submission in order, taking his time.
After Yang Ping's three papers received a strong recommendation from Manstein, Lewis had to send an urgent email to expedite Professor Fukunaga's review to strictly adhere to the process, and he attached Manstein's review comments to the urgent email as well.