Angiotensin II (3-8), human, is a peptide fragment derived from angiotensin II, which plays a role in the regulation of blood pressure and fluid balance. It is primarily used in research settings to study the renin-angiotensin system and its effects on cardiovascular function. This peptide helps scientists understand the mechanisms of hypertension and other cardiovascular diseases. Additionally, it is utilized in pharmacological studies to develop new therapeutic agents targeting angiotensin receptors. Its application in experimental models aids in exploring potential treatments for conditions like heart failure, kidney disorders, and vascular diseases.