A specialized membrane junction between nerve endings and B-cells in islets of Langerhans.
D000818:Animals; D004285:Dogs; D005110:Extracellular Space; D007365:Intercellular Junctions; D007515:Islets of Langerhans / Q000294:innervation*; D008854:Microscopy, Electron; D009411:Nerve Endings / Q000166:cytology*; D051381:Rats; D013570:Synaptic Membranes