A glial cell that ensheaths multiple small diameter axons in the peripheral nervous system. The non-myelinating Schwann cell is embedded among neurons (axons) with minimal extracellular spaces separating them from nerve cell membranes and has a basal lamina. Cells can survive without an axon present. These cells can de-differentiate into immature Schwann cells. [ GOC:cvs http://openisbn.com/search.php?q=0721662544&isbn=1/ GOC:tfm ]