Serpin A8/angiotensinogen protein is an important component of the renin-angiotensin system (RAS), which regulates blood pressure, fluid balance, and electrolyte homeostasis. Serpin A8/Angiotensinogen Protein, Human (HEK293, His) is the recombinant human-derived Serpin A8/Angiotensinogen protein, expressed by HEK293 , with C-His labeled tag.