tl;dr: Researchers at IIT Madras's Sudha Gopalakrishnan Brain Centre have released Anchor, a freely available 3D atlas of the human brainstem at cellular resolution, built from over 500 tissue sections spanning foetal to adult brains and identifying 200+ cell clusters and pathways. It bridges the gap between whole-brain MRI and single-cell microscopy using affordable high-resolution imaging rather than costly molecular techniques. The team next plans to map 100+ whole brains across life stages and diseases like Alzheimer's, aiding research into Parkinson's, stroke, SIDS, and neurosurgical navigation.