The project encompasses nearly one-third of the brain of a fruit fly and includes detailed mappings for more than 25 thousand neurons featuring more than 20 million synapses. The best part: it’s all been released open-source to the public.
https://thenextweb.com/artificial-intelligence/2020/01/22/scientists-working-with-google-just-published-the-most-detailed-brain-scans-ever-created/