title: Argentaffin, parafollicular cells in the non-tumorous parenchyma of a thyroid gland with medullary carcinoma.
mesh_terms: D000368:Aged; D002838:Chromaffin System / Q000473:pathology*; D006801:Humans; D008297:Male; D013961:Thyroid Gland / Q000473:pathology*; D013964:Thyroid Neoplasms / Q000473:pathology*