Fig. 2
From: Primary and secondary hyperparathyroidism present different expressions of calcium-sensing receptor
Immunohistochemical staining of CaSR. a Thyriod glands (0, × 20); b secondary hyperparathyroidism (+ + , × 20); c secondary hyperparathyroidism tissue (+ + + , × 20); d primary hyperparathyroidism tissue (+ , × 20);); e primary hyperparathyroidism tissue (+ + , × 20);); f primary hyperparathyroidism tissue (+ + + , × 20);