title: Interneurons involved in mediation and modulation of gill-withdrawal reflex in Aplysia. IV. Morphological basis of presynaptic facilitation.
mesh_terms: D000818:Animals; D001048:Aplysia; D001369:Axons / Q000648:ultrastructure; D002450:Cell Communication; D005071:Evoked Potentials; D005724:Ganglia / Q000648:ultrastructure; D005880:Gills / Q000294:innervation*; D007395:Interneurons / Q000648:ultrastructure*; D008465:Mechanoreceptors / Q000648:ultrastructure; D008854:Microscopy, Electron; D009474:Neurons / Q000648:ultrastructure; D018377:Neurotransmitter Agents / Q000378:metabolism; D012018:Reflex / Q000502:physiology*; D012701:Serotonin / Q000378:metabolism; D013569:Synapses / Q000648:ultrastructure*; D009435:Synaptic Transmission
chemical_list: D018377:Neurotransmitter Agents; D012701:Serotonin