Table 2. Urea self-exchange permeability... | Rockefeller University Press

Table 2.

Urea self-exchange permeability in RBCs from two donors determined in 1983 and 2022

Donor	P_u in 1983^{^a}	P_u in 2022	P_u,2021/P_u,1983
	cm/s × 10⁴
JBR	2.67 (SD ± 0.05, n = 4)	0.62 (SD ± 0.15, n = 4)	0.23
PBN	5.17 (SD ± 0.03, n = 2)	0.53 (SD ± 0.08, n = 3)	0.10

Donor	P_u in 1983^a	P_u in 2022	P_u,2021/P_u,1983
JBR	2.67 (SD ± 0.05, n = 4)	0.62 (SD ± 0.15, n = 4)	0.23
PBN	5.17 (SD ± 0.03, n = 2)	0.53 (SD ± 0.08, n = 3)	0.10

The urea permeability was determined at 1 mM at 25°C, pH 7.2. Standard deviations (SD) are listed in brackets.

The values are from Brahm (1983b). The standard deviations in 1983 are calculated from values in our databank.

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