Figure 4: Endothelium-dependent relaxation in rat aortae in the presence of pyrogallol (P): cumulative concentration-response curves to ACh in the absence (control) or presence of pyrogallol with varying combinations of α-tocopherol (TC) and α-, δ-, and γ-tocotrienols (T3) (10−4 mg/mL). Tocotrienol isomers and α-tocopherol were present in the proportions found in tocomin (i.e., α-T3- 20%, δ-T3 10%, γ-T3 50%, and α-TC 20%). Data is expressed as mean ± SEM. *Significantly different to control . #Significantly different to pyrogallol Sidak’s multiple comparison test.