Used in biomedical research to detect and quantify Aquaporin-1 protein levels in rat biological samples. Helps study water transport mechanisms across cell membranes, particularly in tissues like kidneys, lungs, and brain. Supports research on fluid balance, edema formation, and diseases involving abnormal water homeostasis such as cerebral edema, nephrotic syndrome, and lung injury. Also useful in evaluating therapeutic interventions targeting aquaporin expression or function in experimental models.