MOESM3 of Estrogen modulation of pain perception with a novel 17β-estradiol pretreatment regime in ovariectomized rats

Additional file 3: Figure S2. Effects of blood collection on serum corticosterone levels. Change of serum corticosterone levels in rats with different replacement paradigms. The day of OVX surgery was defined as day 0, and arrows indicate the day of estrogen pellets implantation. Corticosterone levels didn’t show significant changes in each group when compared with their own initial concentrations respectively. Data are showed as mean ± SEM.