The renal papilla is a niche for adult kidney stem cells
J. Clin. Invest. Juan A. Oliver, et al. 114:795 doi:10.1172/JCI20921 [Go to this article.]

Figure 1
BrdU-retaining cells in the adult kidney. Composite views 100 μm in thickness of a kidney from a 2-month-old rat, obtained by confocal microscopy with 2-μm optical sections. (A) Outer cortex, showing few scattered BrdU-retaining cells with an occasional cell aggregate. (B) Mid-cortex, showing a glomerulus with BrdU-positive cells. (C) Medulla with very rare BrdU-positive cells. (D) Papilla with numerous BrdU-retaining cells. Colored labels indicate staining with FITC fluorescin (green) and rhodamine (red) as described in Results. Scale bars: 50 μm.