Table 5b.

DN solute transport under metabolic acidosis, with amiloride (entering flow = 6 nl/min, Na⁺ = 65, K⁺ = 2.0, HCO₃⁻ = 4.0)

	DCT	CNT	CCD	OMCD	IMCD	Total
Absolute delivery, μmol/min
Na+	14.04	8.77	9.36	9.47	9.97	7.68
K+	0.43	0.80	0.64	0.62	0.35	0.04
Cl−	13.07	9.00	8.85	8.79	9.32	7.05
HCO3−	0.86	0.28	0.61	0.53	0.34	0.11
TA	0.33	0.55	0.59	0.43	0.44	0.47
NH4+	0.69	0.70	0.39	0.33	0.42	0.46
Net acid	0.15	0.97	0.38	0.23	0.53	0.82
Absolute reabsorption, μmol/min
Na+	5.26	−0.59	−0.11	−0.49	2.29	6.36
K+	−0.37	0.16	0.03	0.27	0.31	0.39
Cl−	4.07	0.15	0.06	−0.54	2.27	6.01
HCO3−	0.59	−0.33	0.08	0.19	0.23	0.76
TA	−0.23	−0.04	0.17	−0.01	−0.03	−0.15
NH4+	−0.01	0.30	0.06	−0.09	−0.03	0.23
Net acid	0.82	−0.59	−0.15	0.29	0.30	0.68