Angiotensin II, human, plays a critical role in regulating blood pressure and fluid balance in the body. It is primarily used in research settings to study cardiovascular diseases, hypertension, and kidney function. By understanding its mechanism of action, scientists can develop targeted therapies for conditions like heart failure and chronic kidney disease. Additionally, it is utilized in pharmacological studies to test the efficacy of angiotensin receptor blockers (ARBs) and ACE inhibitors, which are commonly prescribed to manage high blood pressure. Its applications also extend to studying the renin-angiotensin-aldosterone system (RAAS), a key pathway in maintaining vascular and renal health.