Abstract
Summary
The rate of growth of infant rats has been varied by increasing food availability to selected litters. Within the two different populations of infant rats, slow growing versus fast growing, superficial single nephron GFR has little relationship to animal age. Rather, SNGFR is related both to body size and kidney weight. A somewhat better relationship between SNGFR and kidney weight has been found. Fast growing rats show a greater ratio of SNGFR to kidney weight than do slow growing rats.
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