Table 3a.

DN solute transport with low-sodium delivery (entering flow = 6 nl/min, Na⁺ = 25, K⁺ = 2.0, HCO₃⁻ = 8.0)

	DCT	CNT	CCD	OMCD	IMCD	Total
Absolute delivery, μmol/min
Na+	5.40	2.42	1.04	1.18	2.17	0.42
K+	0.43	0.76	1.60	1.37	0.76	0.17
Cl−	3.48	1.44	1.51	1.38	2.07	0.15
HCO3−	1.73	1.14	0.52	0.30	0.10	0.00
TA	0.24	0.40	0.57	0.39	0.40	0.47
NH4+	0.68	0.56	0.31	0.21	0.25	0.20
Net acid	−0.80	−0.18	0.36	0.30	0.55	0.67
Absolute reabsorption, μmol/min
Na+	2.98	1.37	−0.13	−0.99	1.75	4.98
K+	−0.32	−0.84	0.23	0.61	0.59	0.27
Cl−	2.04	−0.07	0.13	−0.69	1.92	3.33
HCO3−	0.59	0.63	0.21	0.20	0.10	1.73
TA	−0.15	−0.17	0.18	−0.01	−0.06	−0.22
NH4+	0.12	0.25	0.10	−0.04	0.04	0.48
Net acid	0.62	0.55	−0.07	0.25	0.12	1.47