Fig. 4From: Relaxation matters: comparison of in-vitro vasodilatory role of botulinum toxin-A and papaverine in human radial artery graftsThe effects of BTX-A pretreatment over the contraction responses of cumulative ET-1. Results are % of KCl induced contractions, mean ± SD. *: p < 0.05 compared to control of each constrictor agent. §: p < 0.05 increase in inhibition, compared to 0th hourBack to article page