Skip to main content
. Author manuscript; available in PMC: 2013 Oct 25.
Published in final edited form as: Acta Physiol (Oxf). 2010 Dec 7;202(3):10.1111/j.1748-1716.2010.02214.x. doi: 10.1111/j.1748-1716.2010.02214.x

Figure 5.

Figure 5

(a) Transverse section showing reticulated pattern formed by distribution of descending thin limbs (DTLs) [aquaporin-1 (AQP1); red] and descending vasa recta (DVR) (urea transporter B; green) across a single plane of the inner medulla (IM). Each void, or black space encompassed by DTLs and DVR, is filled by a single cluster of collecting ducts (CDs) that coalesce as a unit as the segments descend from the IM base toward the papilla. Section (a) is from approx. 900 μm below IM base. (b) and (c) show nearly uniform distribution of ascending thin limbs (ATLs) (chloride channel ClC-K1; green) and ascending vasa recta (PV-1; red) in adjacent transverse sections from the renal IM. Sections (b) and (c) are from approx. 1300 μm below the IM base. Unequal numbers of DTLs and ATLs reflect the prebend regions and AQP1-null DTLs. Scale bars: 100 μm. From Pannabecker and Dantzler (2006), used with permission.