~2.6e-4 Table - link cm/sec
||Human Homo sapiens
||Brahm J. Urea permeability of human red cells. J Gen Physiol. 1983 Jul82(1):1-23. p.12 table IIIPubMed ID6411854
||"The rate of unidirectional [14C]urea efflux from human red cells was determined in the self-exchange and net efflux modes with the continuous flow tube method."
||"Table III shows the results of net efflux and self-exchange experiments
at 25°C and pH 7.2. During both, the same permeability coefficient of
~2.6X10^-4cm/sec was found at a urea concentration of 1 mM." See note beneath table