Researchers at the Max Planck Institute for Brain Research have mapped the molecular landscape of the mouse hippocampus, a region central to learning and memory. By combining RNA and protein profiling with advanced methods to isolate brain regions and synapses, the team identified thousands of molecules with distinct spatial patterns. The study, published in Nature Communications, shows how local protein production and synaptic diversity shape hippocampal function and provides a freely accessible resource for the research community.