title: The fine structure of chromaffin cell implants in the pain modulatory regions of the rat periaqueductal gray and spinal cord.
authors.forename: G D
authors.initials: GD
authors.lastname: Pappas
authors.forename: J
authors.initials: J
authors.lastname: Sagen
mesh_terms: D000313:Adrenal Medulla / Q000166:cytology / Q000637:transplantation; D000818:Animals; D002838:Chromaffin System / Q000166:cytology / Q000637:transplantation* / Q000648:ultrastructure; D008854:Microscopy, Electron; D010146:Pain / Q000502:physiology*; D010487:Periaqueductal Gray / Q000502:physiology*; D051381:Rats; D013116:Spinal Cord / Q000502:physiology*