led to the creation of cerebral organoids consisting of discrete brain structures recapitulating a developing human brain. Lancaster MA, Renner M, Martin CA, et al. Nature 2013 Sep; 501:373-9 <http://webr.emv2.com/faculty1000/F1000_Monthly_images/spacer.gif> Stem-cell shortcuts <http://p4trc.emv2.com/HS