Figure 4: Representative images of immunohistochemical staining of pancreatic islets for insulin expression (A) Pancreatic sections from a healthy BALB/c mouse. (B) Pancreatic section from an stz diabetic BALB/c mouse with a functioning graft on day 76 post transplantation. (C) Section from an im-transplanted microencapsulated islet graft on day 76 post-transplantation. Bar scale (A,B) 200 μm, (C) 500 μm.