Relatively little is known about the different types of cells in the brain and what they do, much less about how they change in illness. The National Institutes of Health has launched the $250 million Brain Research through Advancing Innovative Neurotechnologies (BRAIN) Initiative Cell Census Network (BICCN) to discover and catalog the brain’s “parts list.” The BICCN aims to provide researchers with a comprehensive reference of the diverse cell types in human, monkey, and mouse brain, which is prerequisite to solving the mysteries of brain disorders such as schizophrenia, Alzheimer’s disease, and autism spectrum disorder.  (National Institutes of Health)