+Renin is an [Enzyme](/wiki/enzyme) secreted by the [Kidney](/wiki/kidney), essential for controlling blood pressure. It triggers a cascade, crucial for the body's fluid and electrolyte balance.
+## See also
+- [Blood Pressure](/wiki/blood-pressure)
+- [Angiotensin](/wiki/angiotensin)
+- [Aldosterone](/wiki/aldosterone)
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