Fig. 8.

Lengths of inner medullary loop of Henle circumferential abutment with DVR or AVR. Segments included DTLs, ATLs, and prebend segments from loops forming bends at ∼2,000 μm below the outer medulla. Circumferential abutment lengths were measured at 500-μm intervals below the outer medulla (OM). Absence of a column signifies no abutment. Values are mean ± SE, N = 6 loops from a single inner medulla. DTL abutments with DVR are essentially zero and significantly less than all DTL abutments with AVR. ATL abutments with DVR are significantly higher than DTL abutments with DVR at 500 and 1,000 μm below the outer medulla, but not at 1,500 and 2,000 μm below the outer medulla.