Neurons and Microglia Living in Peace - This image captures two key players in the brain: neurons, shown in green, and microglia, shown in red. Neurons are the brain's communication experts, responsible for transmitting signals that control everything from thoughts and emotions to movement. Microglia, the brain's immune cells, express a molecule called IL-1b, which plays a role in shaping the developing brain. This picture beautifully captures neurons and microglia coexisting, working together in perfect harmony. It's a glimpse of the peaceful and complex world within the brain.