Statistical analysis of the amount of CD19+CD24hiCD38hi B-cells and TAC (r = 0.03, p = 0.83) or CsA (r = 0.48, p = 0.18) trough levels (Fig 4C and 4D), the time after transplantation, the dosage of co-medication (steroids and or MPA), CMV infections or the age of allograft recipients or donors revealed no significant correlation (not shown). This evidence concerns the gene CD19 and cytomegalovirus infection.