University of California, San Diego scientist Alysson Muotri’s lab grew brain organoids from human stem cells that swapped a developmental gene from Neanderthals for the human version.
Muotri Lab/UC San Diego
https://www.npr.org/sections/health-shots/2021/02/12/966470891/minibrains-with-a-neanderthal-gene-offer-hints-about-human-evolution