Microglia, the immune cells of the central nervous system (CNS), are responsible for the removal of cell debris and play a constructive role in tissue remodeling after the injury to the CNS.

• 但是活化的小胶质细胞也会进行吞噬作用清除细胞碎片，并且分泌出神经滋养因子来帮助组织重组。