Used in biomedical research to quantify occludin protein levels in cell or tissue samples, this ELISA kit helps assess tight junction integrity in epithelial and endothelial barriers. It is widely applied in studies related to blood-brain barrier function, gut permeability, and inflammatory diseases. Researchers use it to investigate conditions like multiple sclerosis, inflammatory bowel disease, and cancer metastasis where barrier dysfunction plays a critical role. The kit enables high-sensitivity detection, supporting both basic science and drug development efforts focused on cellular barrier health.