Fig. 2From: Frequency components of systolic blood pressure variability reflect vasomotor and cardiac sympathetic functions in conscious ratsRepresentative data of the time course of changes in cardiovascular parameters following atenolol administration after phentolamine treatment in a conscious rat. Arrows indicate the timing of injections of phentolamine (10 mg/kg, i.p.) and atenolol (10 mg/kg, i.p.)Back to article page