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. 2007 May 17;582(Pt 3):1349–1359. doi: 10.1113/jphysiol.2007.132563

Figure 1. Effects of hypoxia and yohimbine on vasoconstrictor responses evoked in the hindlimb by different patterns of sympathetic stimulation.

Figure 1

Left panel shows baseline values of integrated femoral vascular resistance (FVR) over 1 min recorded immediately prior to sympathetic stimulation. Right panels indicate the responses evoked by the 3 patterns of sympathetic stimulation and show the mean ±s.e.m. of the change in integrated FVR (ΔInt FVR). Labels below columns indicate normoxia (N), hypoxia (H) and yohimbine (Yoh). Symbols indicate statistical significance of P < 0.05 (one symbol) and P < 0.01 (two symbols) where *=versus normoxia before or after yohimbine; †=versus before yohimbine in normoxia or hypoxia; and ‡=versus hypoxia before yohimbine.