Cultivator of Brain Parts:
Yoshiki Sasai is not just an ordinary tissue engineer who tries to coax stem cells to grow into fully formed bodily structures. It is true that Sasai has made his mark by taking on big projects like using stem cells to whip up a retina, cortical tissue and the cerebellum, involved with balance and movement. But his research has gone deeper by delving into the way stem cells organize themselves into complex structures under the influence of genes and the prenatal environment. Read a profile of Sasai here to accompany “ Grow Your Own Eye ,” Sasai’s own account of growing a retina in the November Scientific American .