1. The astrocytes of the central nervous system, which function as connective tissue.
2. An abnormal enlargement and proliferation of glia, the cells in the brain that fight infection.
3. Sub-types of the glial cells in the brain. They are also known as astrocytic glial cells. Star-shaped, there many arms span all around neurons.
4. Neuroglial cells of ectodermal origin, characterized by fibrous, protoplasmic, or plasmatofibrous processes. Collectively, such cells are called astroglia.