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Effect of aging on total GFR, nephron number, and mean SNGFR
Data are presented as percent difference compared with the youngest age group (18–29 yr). For age ranges up to 69 yr, total GFR and nephron number decrease in parallel with age, whereas mean SNGFR does not change. In the 70–75 age range, a further reduction in nephron number is associated with an increase in mean SNGFR while total GFR was maintained. Based on data from Ref. 9.
