title: Fine structure of mammalian and avian pancreatic islets with special reference to D cells and nervous elements.
mesh_terms: D000818:Animals; D010856:Columbidae / Q000033:anatomy & histology*; D003594:Cytoplasmic Granules; D004285:Dogs / Q000033:anatomy & histology*; D006168:Guinea Pigs / Q000033:anatomy & histology*; D006652:Histological Techniques; D006654:Histology, Comparative; D007515:Islets of Langerhans / Q000166:cytology* / Q000294:innervation; D008854:Microscopy, Electron; D009411:Nerve Endings; D009413:Nerve Fibers, Myelinated; D012583:Schwann Cells; D013045:Species Specificity