Table 3.

Vessel permeabilities

	OM/MR Vessels (R = 15 µm)		IMDVR (R = 15 µm)		IMAVR (R = 20 µm)
	Tight Junction	Cell	Tight Junction	Cell	Tight Junction	Cell
Pf. cm/s	1.67	0.06	1.50	0.06	13.33	0.05
RTLp, cm/s·mOsm	0.030	0.001	0.027	0.001	0.240	0.0009
σ(i)	0.000	1.000	0.000	1.000	0.000	1.000
h(i), cm/s × 105
Na	76	0	75	0	115	0
K	112	0	111	0	169	0
Cl	116	0	114	0	176	0
HCO3	67	0	67	0	102	0
H2CO3	84	130	83	130	127	130
CO2	110	15,000	108	15,000	166	15,000
HPO4	43	0	43	0	66	0
H2PO4	50	0	50	0	76	0
Urea	190	150	75	1	120	1
NH3	120	1,500	118	1,500	182	1500
NH4	113	0	111	0	170	0
H	257	2,000	254	2,000	389	2,000
HCO2	68	0	68	0	104	0
H2CO2	81	0	80	0	122	0
Glucose	38	0	38	0	58	0

Composite vessel permeabilities are computed as sums of TJ and Cell values:

$$P_{fCS}=P_{fTJ}+P_{fCell};$$

$$P_{fCS}\cdot {\sigma }_{CS}\left(i\right)=P_{fTJ}\cdot {\sigma }_{TJ}\left(i\right)+P_{fCell}\cdot {\sigma }_{Cell}\left(i\right);$$

$$h_{CS}\left(i\right)=h_{TJ}\left(i\right)+h_{Cell}\left(i\right).$$