Used for detecting and quantifying phenoloxidase (PPO) enzyme activity in insect samples, this ELISA kit supports research in insect immunology and physiology. PPO plays a key role in the insect immune response, particularly in melanization and pathogen defense. The kit enables scientists to assess immune system activation in insects under various conditions such as infection, environmental stress, or genetic modification. It is widely applied in entomological studies, pest control research, and ecological immunology to compare immune responses across species or developmental stages. The assay is suitable for high-throughput analysis, providing a sensitive and specific measurement of PPO levels in hemolymph or tissue extracts.