The thyrotropin receptor (or TSH receptor) is a receptor (and associated protein) that responds to thyroid-stimulating hormone (also known as "thyrotropin") and stimulates the production of thyroxine (T4) and triiodothyronine (T3).
Thyrotropin receptor (TSH receptor) is a receptor protein that responds to thyroid-stimulating hormone (thyrotropin) and stimulates the production of thyroxine (T4) and triiodothyronine (T3).