title: Morphological criteria for the differentiation of synapses in vertebrates.
mesh_terms: D000818:Animals; D008854:Microscopy, Electron; D009469:Neuromuscular Junction; D018377:Neurotransmitter Agents / Q000378:metabolism; D013569:Synapses / Q000378:metabolism / Q000648:ultrastructure*; D013570:Synaptic Membranes / Q000648:ultrastructure; D013572:Synaptic Vesicles / Q000648:ultrastructure; D014714:Vertebrates
chemical_list: D018377:Neurotransmitter Agents