The safety of the renal allograft biopsy and the standardization of allogra
ft histopathology interpretation have renewed interest in the protocol biop
sy, Recent studies in the areas of 'marginal' donors, surveillance of acute
rejection, molecular biology and chronic rejection are discussed. Curr Opi
n Nephrol Hypertens 9:615-619. (C) 2000 Lippincott Williams & Wilkins.