Figure 2

a Changes in mean blood pressure (mBP) associated with filtered air (control)/ultrafine carbon particles (UfCPs, exposed) exposed SHRs. mBP increased by 6 mmHg, (4%) on the first and second day of recovery in the UfCPs exposed groups compare to control SHRs. * indicates significant difference of mBP (p < 0.05) between exposed (gray) and control (white) SHRs. 2b: Changes in heart rate (HR) of SHRs associated with filtered air (control)/ultrafine carbon particles (UfCPs; exposed) exposure. HR responded with a lag of one day, it increased on the second and third day of recovery by 17 bpm (5%) in UfCPs exposed SHRs, and reached baseline values on the fourth day of recovery. * indicates significant difference of HR (p < 0.05) between exposed (gray) and control (white) SHRs. 2c: Changes in body temperature (T) of SHRs associated with filtered air (control)/ultrafine carbon particles (UfCPs; exposed) exposure. 2d: Changes in activity (Act) of SHRs associated with filtered air (control)/ultrafine carbon particles (UfCPs; exposed) exposure. The vertical bars exhibit arithmetic mean values (mean ± SE) of control (white; n = 7) and exposed (gary; n = 7) groups. Each bar represents a combined mean value of: (72 10-minutes segments/12h dark periods/rat) × 7 rats.