Used to detect and quantify perforin protein levels secreted by monkey immune cells, particularly natural killer (NK) cells and cytotoxic T lymphocytes. This kit is applied in immunological research to study immune responses, such as those involved in viral infections, cancer, and autoimmune diseases. It enables researchers to assess cytotoxic activity in vitro and evaluate the effectiveness of therapeutic agents on immune cell function. Commonly used in preclinical studies involving non-human primates to support vaccine development and immunotherapy research.