Used in biomedical research to measure endothelin-1 levels in rabbit blood or tissue samples. Helps study cardiovascular function, vascular diseases, and endothelial cell activity. Commonly applied in experiments involving hypertension, heart failure, and ischemia. Enables researchers to assess changes in ET-1 concentration under experimental treatments, providing insight into disease mechanisms and therapeutic effects. Suitable for use in preclinical studies where rabbit models are employed to mimic human physiological conditions.