Sequential changes in glomerular filtration rate (GFR) and blood urea nitrogen (BUN), and creatinine concentrations in the recipient (closed circles and black line) and donor (open circles and dotted line). Kidney transplantation was performed on day 1. GFR was estimated pre-operatively and on days 2, 18, 43, 113, 231, 289, 384, 448, 659, 705 and/or 750 postoperatively by the single blood sample method using iodixanol