CD47 and pancreatic insulinoma: To investigate whether these protections were due to CD47 overexpression or to the species-specific effect of mouse CD47, another line of rat insulinoma cells (mCD47low-INS-1E) labeled with CFSE, which expressed lower levels of mouse CD47 (MFI 330.67) than the original mCD47-INS-1E cells (MFI 506.88), were injected into the peritoneal cavity of streptozotocin-induced diabetic Rag2−/− γ chain−/− mice.