title: Tonofilament aggregations in ultimobranchial gland cells of Rana temporaria L.
mesh_terms: D000818:Animals; D001001:Anura / Q000033:anatomy & histology*; D003594:Cytoplasmic Granules; D004702:Endocrine Glands / Q000166:cytology*; D008854:Microscopy, Electron; D009940:Organoids