Neutrophil Matrix metalloproteinase 9 (MMP-9) can handle the CXC motif chemokine 5 (CXCL5) to promote further the neutrophil recruitment (Song et al. 2013), angiogenesis, and tumor cells’ migration in vivo (Qian et al. 2011; Shang, et al. 2012). Here, MMP9 is linked to neoplasm.