Fig. 3.
A: double immunofluorescence labeling for AQP1 (left) and the luminal marker Tamm-Horsfall protein (right) in outer medullary slices from representative WT (top) and Aqp1 −/− mice (bottom; n = 6). B: quantitative data showing the percentage of Tamm-Horsfall-positive tubules also positive for AQP1 labeling in the outer medulla of WT and Aqp1 −/− mice (n = 6).