The first wiring diagram of the whole brain of a fruit fly, containing around 140,000 neurons and over 50 million connections, is presented in a paper in Nature
https://www.nature.com/articles/s41586-024-07558-y?utm_source=twitter&utm_medium=organic_social&utm_content=null&utm_campaign=CONR_JRNLS_AWA1_GL_PCOM_SMEDA_NATUREPORTFOLIO
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Now that’s pretty fly.
I bet your brain enjoyed that. Took you on a ride aboard the *cranial blood vessel* .