Assertion: receptor blocker | /r/HasProperty | a group of pharmaceuticals
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text: Angiotensin II receptor blockers (ARBs), formally angiotensin II type 1 (AT1) receptor antagonists, also known as angiotensin receptor blocker, angiotensin II receptor antagonists, or AT 1 receptor antagonists, are a group of pharmaceuticals that bind to and inhibit the angiotensin II type 1 receptor (AT1) and thereby block the arteriolar contraction and sodium retention effects of renin–angiotensin system.