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Effects of DZN and crocin treatment (4 weeks) on heart rate (HR) in rats using tail cuff method. Crocin and vitamin E were administered intraperitoneally three times per week, once a day, respectively. DZN (corn oil as a vehicle) was given through gavage to rats once a day. Data are shown as mean ± SEM of five HR recording, ***P< 0.001 compared to the control group, ###P< 0.001 and ##P< 0.01 compared to DZN group, One way ANOVA, Tukey-Kramer test, n= 6
