Figure 9.

In the rat inner medullary thin limbs of Henle's loops, SLC4A11 is expressed predominantly in AQP1‐positive segments, and little or no expression occurs in the AQP1‐null descending thin limbs, ClCK‐positive segments (ascending thin limbs), UT‐B‐positive vasa recta (descending vasa recta) or in the IMCD. Three vascular bundles in which descending vasa recta predominate are circled. The image consists of a composite overlay of three serial transverse sections from the upper 30% of the inner medulla. ClCK expression in ascending thin limbs indicates the approximate total number of thin limbs in transverse sections. Scale bar, 50 μm.