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IDO gene expression. The gene expression of IDO in transplanted kidneys was analyzed by quantitative polymerase chain reaction. Results are normalized by the expression of housekeeping gene 18S and expressed as many folds of the NT at 12 weeks (y axis). MSC-treated animals (-o-) have increased the levels of IDO at 12 weeks that significantly increase at 24 weeks with regard to BMC treatment (-x-) and NT kidneys (-Δ-) (aP<0.05 vs. NT, bP<0.05 vs. BMC).
