title: Cell junctions with funnels in the olfactory mucosa of frogs (Rana temporaria L.).
abstract: A characteristic structure in the apical junctional belt of the olfactory epithelium in Rana temporaria is visible in freeze-fracture preparations. This structure is described as a "funnel with channel across the junctional belt". It is supposed to represent a possible way for "discarding used molecules" after stimulation, and to allow the stimulation of free nerve endings in the depth of olfactory epithelia.
mesh_terms: D000818:Animals; D001001:Anura; D005614:Freeze Fracturing; D007365:Intercellular Junctions / Q000502:physiology / Q000648:ultrastructure*; D009831:Olfactory Mucosa / Q000648:ultrastructure*; D011896:Rana temporaria