Evolution of arteriolar mean internal diameter during the experimental period.

<p>Sequential measurements were performed after one, three, and six hours of LPS injection. Control, non-endotoxemic animals (n = 10); LPS, endotoxemic animals (n = 10); Milrinone 25, endotoxemic and milrinone 0.25 μg.kg^-1.min^-1 treated animals (n = 10); Milrinone 50, endotoxemic and milrinone 0.50 μg.kg^-1.min^-1 treated animals (n = 10); Norepinephrine, endotoxemic and norepinephrine treated animals (n = 10). † <i>p</i> <0.05 <i>vs</i>. group baseline; * <i>p</i> <0.05 <i>vs</i>. Control group at the same time point; ‡ <i>p</i> <0.05 <i>vs</i>. Milrinone 25 group at the same time point; § <i>p</i> <0.05 <i>vs</i>. Milrinone 50 group at the same time point.