Interleukin 17 (IL-17), also referred to as IL-17A, is a member of a family of cytokines that includes IL-17B, -17C, -17D, -17E and -17F. IL-17 function is essential to a subset of CD4+ T-Cells called T helper 17 (Th17) cells. IL-17A is a pro-inflammatory cytokine primarily secreted by T lymphocytes. It promotes expansion and recruitment of innate immune cells such as neutrophils and stimulates production of beta-defensins and other anti-microbial peptides....