Figure 6: In vivo human kidney showing open tubules and cortical blood flow. Open tubules appear round and relatively uniform. A larger blood vessel is seen in (B) against some smaller vessels observed in (A, C, and D). The smaller blue and red dots represent peritubular vessels. Data are from a single patient. Scale bar=500 μm. ((Reprinted with permission from JIOHS, 7 (4), 130064, 2014).