title: Electron microscopic observations on degeneration and regeneration of unmyelinated fibres.
mesh_terms: D000818:Animals; D008854:Microscopy, Electron; D009410:Nerve Degeneration; D009416:Nerve Regeneration; D051381:Rats; D012583:Schwann Cells; D013564:Sympathetic Nervous System / Q000033:anatomy & histology* / Q000293:injuries; D013997:Time Factors