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. 2002 Aug 2;543(Pt 3):959–975. doi: 10.1113/jphysiol.2002.023010

Figure 8. The relation between PS and U in 7 rat venules in the presence of l-NNA.

Figure 8

A-F show the relation between PS and U for single rat venules when 20 μM l-NNA was present in the superfusate. Each vessel was taken from a different animal. No significant positive correlation was found for any of the vessels. The number of measurements (n) and the correlation coefficients (r) were: n = 24, r = 0.033 (A); n = 20, r = -0.3685 (B); n = 17, r = -0.6105 (C); n = 26, r = -0.3814 (D); n = 8, r = -0.6095 (E); and n = 60, r = 0.3269 (F). In the experiment shown in G, no correlation was found between PS and U (n = 24, r = 0.168) in the presence of l-NNA (♦). Twenty minutes after the l-NNA had been replaced by l-NNA-free Ringer-Locke solution (⋄) there was a significant positive correlation between PS and U (n = 17, r = 0.7976, P < 0.01).