title: Innervation of the umbilical vessels. Electron microscopic studies on the guinea-pig.
mesh_terms: D000818:Animals; D005333:Fetus; D006168:Guinea Pigs; D008854:Microscopy, Electron; D009130:Muscle, Smooth / Q000166:cytology; D009434:Neural Pathways; D009469:Neuromuscular Junction; D014469:Umbilical Arteries / Q000166:cytology / Q000294:innervation*; D014471:Umbilical Veins / Q000166:cytology / Q000294:innervation*