Fig. 7From: Relaxation matters: comparison of in-vitro vasodilatory role of botulinum toxin-A and papaverine in human radial artery graftsHistopathologic evaluation of papaverine (b-c) and Botulinum Toxin-A (d-e), made by Hematoxylene&Eosine stain under light microscopy (× 40 magnification) showed similar findings with the control group (a)Back to article page