LL-37 is a 37-amino-acid cathelicidin-derived antimicrobial peptide that also modulates innate immunity, wound healing and inflammation, making it a versatile subject in host-defense research. Its dual antimicrobial and immunomodulatory activities support studies in infection biology and regenerative medicine. The peptide is supplied as a white lyophilized powder at >=99% HPLC purity in a sealed vial. Complete documentation and flexible ordering are available for research groups. As a dedicated supplier to the research community, we combine factory-level pricing with professional service, including quantity discounts, replacement support for transit damage and clear communication throughout the order cycle. Worldwide delivery is available with full tracking, and our team can advise on documentation requirements for different countries.