Renin
Renin is an endoprotease (hormone-like enzyme) produced in the kidney, more specifically in the juxtaglomerular apparatus. It represents an important link in the renin-angiotensin-aldosterone system (RAAS), which helps regulate blood pressure and salt balance. Increased renin is produced when a lack of sodium in the blood or hypovolemia (decreased blood volume) is determined by the … Renin