N-Formyl-Met-Leu-Phe is widely used in research to study immune cell responses, particularly in neutrophils. It acts as a chemoattractant, guiding these cells to sites of infection or inflammation. This peptide is also employed in experiments to understand the mechanisms of chemotaxis and phagocytosis. Additionally, it serves as a tool in drug development, helping to identify potential anti-inflammatory or immunomodulatory compounds. Its role in mimicking bacterial peptides makes it valuable for studying host-pathogen interactions and immune system activation.