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. 2001 Jan;132(1):30–36. doi: 10.1038/sj.bjp.0703768

Figure 2.

Figure 2

Nitrovasodilator induced relaxation of isolated porcine basilar artery segments. The vasodilator activity of S-nitroso-N-acetyl-D,L-penicillamine (SNAP), glyceryl trinitrate (GTN), isosorbide-5-nitrate (ISMN) and pentaerythritol tetranitrate (PETN) was assessed in the presence (intact) and absence (denuded) of intact endothelium. Each concentration-response curve is plotted by taking the respective mean values of 6 – 9 individual experiments (s.e.mean indicated by bars, *P<0.05 compared to intact endothelium, halfmaximal effective concentrations, see Table 1).