Figure 4.
Changes in glomerular filtration rate (GFR) and glomerulare number, by age. (A) Changes in GFR (17). (B) Changes in glomerular number, estimated from autopsy studies (14). (C) Changes in glomerular number from deceased donors, estimated by combining renal physiology with morphometry from kidney biopsies, compared with estimates from autopsy studies (16). (D) Changes in glomerular number from living donors, estimated by combining renal physiology with morphometry from kidney biopsies (15).