IL-17A-17F Heterodimer Protein is the heterodimer of the cytokines IL-17A and IL-17F. Both IL-17A and IL-17F can induce antimicrobial peptides, cytokines (IL-6 and GM-CSF), chemokines (CCL2, CCL7 and CXCL1), and matrix metalloproteinases (MMP-1 and MMP13