Brain Guardians Remove Dying Neurons (video) Salk Institute Share Print E-Mail Loading video... Caption This video loops through a 1 cubic millimeter of the mouse brain in an area where new brain cells can grow, called the SVZ neurogenic region. Individual microglia -- the cells that engulf dead cells in the brain--are labeled green. These green cells evenly cover the entirety of the brain. Credit Salk Institute Usage Restrictions With credit and related credit and related coverage Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.