. "Glial cell growth that occurs in the perineurium, a cell layer that ensheaths projections of peripheral nerves, such as motor axons." . . "perineurial glial growth" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .