On the parafollicular cells in the thyroid gland of the bovine foetus.
D000818:Animals; D002417:Cattle; D004847:Epithelial Cells; D004848:Epithelium; D006651:Histocytochemistry; D008853:Microscopy; D008854:Microscopy, Electron; D013194:Staining and Labeling; D013961:Thyroid Gland / Q000196:embryology*