title: Ultrastructure of Grandry nerve endings in the beak skin of some aquatic birds.
mesh_terms: D000818:Animals; D001502:Beak; D001717:Birds; D008854:Microscopy, Electron; D009411:Nerve Endings / Q000166:cytology*; D009475:Neurons, Afferent; D012583:Schwann Cells; D012867:Skin / Q000166:cytology / Q000294:innervation*