SRY and colitis: In our previous study, we have demonstrated that hematopoietic stem cells or MSCs could be implanted in the ulcerated experimental colitis region of a rat model after transplantation; male donor cells were followed by Sry gene using PCR and Y chromosome FISH in female recipients, and the donor cell rate was evaluated by brown positive cells labeled by bromodeoxyuridine (BrdU) immunohistochemistry.