structure thyroid gland. histological structure of thryoid follicle thyroid or epithelial cells or thyrocytes

hormones biology cell follicular anatomical anatomy body cartilage cross diagram disease education endocrinology follicle gland graphic histological hormone human hyperthyroidism hypothyroidism illustration larynx nodule organ parathyroid poster scheme science secretion section structure throat thyroid trachea vector view blood capillary cells chart colloid cuboidal epithelial glycoprotein histology lobe pharynx thyroidectomy