A summary of all major known glial cell types present in both the central and the peripheral nervous systems. The major glia subtypes of the central nervous system are astrocytes and their specialized subtypes are as follows: Bergmann glia in the cerebellum and Müller glia in the retina, oligodendrocytes and their precursors, microglia, ependymal cells, tanycytes, and pituicytes. Radial glia are present in the central nervous system during development, and they differentiate both into neurons and some glial subtypes. In the peripheral nervous system, there are several subtypes of Schwann cells, including myelinating and nonmyelinating Schwann cells, also called Remak Schwann cells and perisynaptic/terminal Schwann cells. Satellite glia surround the cell bodies of the neurons in ganglia, and enteric glia, which are sometimes classed as a Schwann cell subtype, can be found in the enteric nervous system.
