Representative photomicrographs of Oil Red O staining in frozen kidney sections from Chinese Bama minipigs. No apparent lipid droplets, appeared as red spots, were observed in the control group (1A) and the HSFD+Ibrolipim group (1C). There were marked deposition in tubular epithelial cells and small amounts in glomeruli of Oil Red O-stainable lipid in the HSFD group (1B) (× 200 magnification). (1D) The percentage of Oil Red O-positive area was used for comparison (mean ± SD). * P < 0.01 vs. CD group; # P < 0.01 vs. HSFD group.