microglia
/maɪˈkrɑɡliə/
noun
- Small cells in the brain and spinal cord that act as the main immune defense, protecting nerve tissue by removing damaged cells and fighting infections.
- When the brain is injured, microglia become active and help clean up cellular debris.
- Scientists are studying how microglia contribute to diseases like Alzheimer's.
- Microglia constantly patrol the brain for signs of injury or infection.