Light micrograph of a peripheral nerve containing nonmyelinated axons and nuclei of Schwann cells. Several capillaries are present among the axons. The nerve is supported and enclosed by a thin margin of connective tissue termed perineurium (blue). The surrounding red-stained tissues are collagen and connective tissue matrix. Paraffin section, Masson's trichrome stain. Magnification: x 250 when width printed at 10cm.