Fig. 3.

Effect of apigenin on thromboxane A₂ mimetic-induced vascular contraction in denuded muscles. Each ring was equilibrated in the organ bath solution for 30–60 min before relaxation responses to apigenin were measured. Data are expressed as the means of 3–5 experiments with vertical lines representing SEMs. ^*p<0.05, ^**p<0.01, presence versus absence of apigenin.