Figure 3.

Photomicrographs of mesenteric lymph node from a formerly diabetic rat into which E28 pig pancreatic primordia and pig islets had been transplanted in the mesentery and kidney respectively stained using anti-insulin antibody (A and C) or control antibody (B and D) and sections hybridized to antisense (E) or sense (F) porcine proinsulin mRNA probes. Arrows delineate tissue that stains positive for insulin (red-brown) (A and C) or negative staining tissue (B) or positive staining for porcine proinsulin mRNA (E). Scale bars: 80 μm (A and B) and 25 μm (C–F).