title: Ultrastructural study of medullary carcinoma of the thyroid.
mesh_terms: D000328:Adult; D002277:Carcinoma / Q000648:ultrastructure*; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013961:Thyroid Gland / Q000648:ultrastructure; D013964:Thyroid Neoplasms / Q000648:ultrastructure*