The mouse is the most commonly used vertebrate experimental model in neuroscience research, and the new atlas paves the way for a greater understanding of the human brain. The atlas describes the type, location, and molecular information of more than 32 million cells and provides information on connectivity between these cells. Transcriptomic cell-type taxonomy of the whole mouse brain. Image credit: Yao et al., doi: 10.1038/s41586-023-06812-z. “A...