Figure 6: A) Fluorescent Immunohistochemistry staining of P2X7 expression in the human islet. P2X7 was labeled with anti-P2X7 antibody (green, arrow indicated), while β cells were labeled with anti-human proinsulin antibody (red, arrow indicated). Magnification=20X. B) The relative expression level of P2X7R in oxATP treated human islet and human islet control. (*p<0.05 vs. islet human islet control group).