Nephrolithiasis: site of the initial solid phase
J. Clin. Invest. David A. Bushinsky, et al. 111:602 doi:10.1172/JCI18016 [Go to this article.]

Figure 2
Stone formation in patients following intestinal bypass. Initial calcium phosphate (apatite) crystallization was found within the tubule lumens of the terminal collecting ducts (A and B). Contact with the urine, supersaturated with respect to calcium oxalate, may have promoted heterogeneous nucleation and formation of calcium oxalate kidney stones (C).