➀ The BRAIN Initiative® Cell Atlas Network (BICAN) releases its first major dataset, providing single-cell and single-nucleus transcriptomic and epigenomic profiles from human, mouse, and other mammalian brain cells. ➁ The open-access release aims to accelerate neuroscience research by offering raw data to define brain cell types and their molecular characteristics. ➂ BICAN prioritizes early data sharing to foster collaboration and speed up discoveries about brain health and disease.