Midbrain dopaminergic neurons under a microscope. Credit: Hilary Toh, Duke-NUS Medical School Scientists at Duke-NUS Medical School and partner institutions assembled one of the most complete single-cell maps of the developing human brain. The atlas identifies nearly every cell type, records their genetic signatures, and shows how these cells grow and interact. It also compares leading laboratory methods for producing high-quality neurons, advancing efforts to develop new therapies for