title: Observations on the cell types present in the principal islet of the dab Limanda limanda.
mesh_terms: D000818:Animals; D005399:Fishes / Q000033:anatomy & histology*; D006056:Golgi Apparatus / Q000648:ultrastructure; D007515:Islets of Langerhans / Q000166:cytology* / Q000648:ultrastructure; D008854:Microscopy, Electron