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. Author manuscript; available in PMC: 2013 Oct 1.
Published in final edited form as: Kidney Int. 2010 Apr 28;78(3):310–317. doi: 10.1038/ki.2010.131

Figure 6. Principle determinants of interstitial plaque.

Figure 6

Normal subjects (Normal) and idiopathic CaOx stone formers (CaOx) have urine pH (y-axis) values near 6 as well as similar urine volumes (x-axis), but the stone formers have much higher calcium excretion (z-axis height) and abundant plaque (size of symbol) vs. small amounts for normals. Bypass patients (Bypass) have normal amounts of plaque; low urine calcium and high volume offset the low urine pH. Small bowel resection (SBR) and ileostomy patients (Ileostomy) have low urine pH and volume, and normal calcium excretions, and both form abundant plaque.