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Fig. 2. Unidirectional secretory, unidirectional reabsorptive, and net urate fluxes
by chick PTCs following treatment with estrone sulfate (10 µmol
l1, 500 µmol l1, or 2500 µmol
l1). Estrone sulfate was administered to the interstitial
side of the epithelium only (at t=0). Data are presented as the
percentage of the paired control secretory flux and are means ±
S.E.M. of four (10 µmol l1 and 500 µmol
l1) and 10 (2500 µmol l1) preparations.
*Significantly different from paired control flux
(P<0.05, paired t-test).