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Unlike neurons, which earned their starring roles in neuroscience as soon as researchers demonstrated what they did, neuroglia didn’t get much respect until more than a century after their discovery.

The solid teratomata, with all varieties of connective tissue, as fibrous tissue, fat tissue, cartilage, bone, neuroglia, in addition to nerves, muscle, and vessels.

With the exception of these last cells the object of the neuroglia cells is to insulate nerve fibrils and cells from one another.

A part of the mass of gray matter also consists of the neuroglia which surrounds the nerve cells and fibers, and a network of blood vessels.

If these theories be true, what, it may be asked, is the agency that causes the dendrites to contract or the neuroglia cells to expand?