Follicles in human parathyroid glands.
D003593:Cytoplasm; D006801:Humans; D006961:Hyperparathyroidism / Q000473:pathology*; D006962:Hyperparathyroidism, Secondary / Q000473:pathology*; D008853:Microscopy; D008854:Microscopy, Electron; D010280:Parathyroid Glands / Q000473:pathology*