Disclosed are peptides having SEQ ID NOs: 1 to 24 that induce superoxide generation by human monocytes or neutrophils； that induce an intracellular calcium increase by human peripheral blood monocytes or neutrophils； binds to formyl peptide receptor or formyl peptide receptor-like 1； that induce chemotactic migration of human monocytes or neutrophils in vitro； that induce degranulation in formyl peptide receptor expressing cells or formyl peptide receptor-like 1 expressing cells； that stimulate extracellular signal regulated protein kinase phosphorylation via activation of formyl peptide receptor or formyl peptide receptor-like 1； or that stimulate Akt phosphorylation via activation of formyl peptide receptor or formyl peptide receptor-like 1.
