Maresin 1 is a specialized pro-resolving mediator biosynthesized by macrophages, demonstrating potent anti-inflammatory and pro-resolving actions. It attenuates LPS-induced lung injury in murine models by inhibiting neutrophil adhesion and reducing pro-inflammatory cytokines, while also stimulating intracellular Ca2+ signaling. This molecule is a valuable research tool for studying inflammation resolution mechanisms in both in vitro and in vivo contexts.