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. 2018 Feb 26;15:12. doi: 10.1186/s12989-018-0248-2

Fig. 5.

Fig. 5

5-hydroxytryptamine(5-HT)-induced receptor-dependent vasocontraction of rat aorta segments exposed ex vivo to particles. The 5-HT response is expressed as the % maximal contraction induced by stimulation with K+ before the dose-response measurements. Each point on the curve represents the cumulative response at each concentration of 5-HT. The data are presented as the mean ± SEM, n indicates the number of animals. An asterisk (*) denote a statistically significant effect on Emax compared to the control group (P < 0.05)