Blood's Immune Cells May Replace Faulty Brain Cells

Our immune system can do amazing things. One cell, called a monocyte, travels through our blood to eat foreign cells and promote the healing of tissues. This type of cell is now linked to preventing dysfunctional brain cells by replacing another type of immune cell called microglia. In certain situations, the moncyte cells can enter the brain and help heal the brain cells by replacing the microglia. The replacement of these cells has brought up a great concern and a new question:

Can monocytes be exploited to combat the consequences of Alzhiemer's disease and other neurodegenerative diseases?