Advertisement'Minibrains' Could Help Drug Discovery For Zika And For Alzheimer'sPlay03:52Download AudioNovember 13, 2016Jon HamiltonfacebookEmailThis image is from lab-grown brain tissue — a minibrain — infected by Zika virus (white) with neural stem cells in red and neuronal nuclei in green. (Courtesy of Xuyu Qian and Guo-li Ming)