title: Active zone at Aplysia synapses: organization of presynaptic dense projections.
mesh_terms: D000818:Animals; D001048:Aplysia; D005724:Ganglia / Q000648:ultrastructure*; D008854:Microscopy, Electron; D013569:Synapses / Q000648:ultrastructure*; D013570:Synaptic Membranes / Q000648:ultrastructure; D009435:Synaptic Transmission; D013572:Synaptic Vesicles / Q000648:ultrastructure