The Stem-Cell ScandalA group of researchers believed that subjecting tissues to trauma could give ordinary cells stem-cell-like properties.Illustration by Chad Hagen Yoshiki Sasai was known as “the brainmaker.” One of Japan’s foremost developmental biologists, he made discoveries that illuminated the formation of the embryonic nervous system, and, using stem cells, he grew the optic cup, parts of the cerebral cortex,
