Histopathological analyses of the lung in the TVT groups and the pancreas in the PST groups (hematoxylin and eosin stain, ×200 magnification). Representative images of the lung (a) and histopathological inflammatory scores (b) at various time points in the TVT groups. Representative images of the transplant site and white blood cell counts in the pancreas subcapsular region in five high power fields (×400) per sample at different time points in the PST groups (c, d). *P<0.05. MSC, mesenchymal stem cell; PST, pancreas subcapsular transplantation; TVT, tail vein transplantation.