1. Hyperoxaluria: a gut–kidney axis?
Stef Robijn, Bernd Hoppe, Benjamin A. Vervaet, Patrick C. D'Haese, Anja Verhulst 
Kidney International 
Volume 80, Issue 11, Pages (December 2011)
DOI: /ki
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2. Figure 1
Overview of endogenous oxalate synthesis pathways. PH I–III, primary hyperoxaluria types I–III.
Kidney International  , DOI: ( /ki )
Copyright © 2011 International Society of Nephrology Terms and Conditions

3. Figure 2
Proposed mechanism of renal oxalate handling. Cl−, chloride; DCT, distal convoluted tubule; OMCD, outer medulla collecting duct; Ox2−, oxalate; PCT, proximal convoluted tubule; PST, proximal straight tubule; SLC26, solute-linked carrier 26; SO42−, sulfate; TAL, thick ascending limb.
Kidney International  , DOI: ( /ki )
Copyright © 2011 International Society of Nephrology Terms and Conditions

4. Figure 3
Proposed mechanism of oxalate handling across liver, stomach, and intestinal tract. Cl−, chloride; Ox2−, oxalate; SLC26, solute-linked carrier 26; SO42−, sulfate.
Kidney International  , DOI: ( /ki )
Copyright © 2011 International Society of Nephrology Terms and Conditions