Figure 3: Effects of resveratrol on microvessel density (MVD) during DENA-initiated hepatocarcinogenesis in female Sprague-Dawley rats. Rats were sacrificed 20 weeks following the commencement of the study and MVD was determined by counting the number of CD31-positive blood vessels per field in selected vascularized areas. Each bar represents the mean standard error (n = 4 livers). aP<0.001 as compared to normal group; bP<0.01 and cP<0.001 as compared to DENA control.