The hippocampus is a major component of the brains of humans and other mammals. It belongs to the limbic system and plays important roles in the consolidation of information from short-term memory to long-term memory and spatial navigation.

Hippocampus (Photomicrograph, 2005) | Genetically-encoded fluorescent proteins illuminate neurons in different colors in a modern version of the Golgi stain, a simple chemical coloring traditionally done with silver nitrate

Image by Tamily Weissman, Jeff Lichtman, and Joshua Sanes