Box and Whisker Plots show the 25^{th} percentile and 75^{th} percentile (upper and lower limit of the box, respectively), the median and extreme values (upper and lower limit of the vertical bar). 15D=low pressure-low volume MV in dorsal recumbency; 30D=high pressure-high volume MV in dorsal recumbency; 15L=low pressure-low volume MV in lateral recumbency; 30L=high pressurehigh volume MV in lateral recumbency; T_{0}=at the beginning of mechanical ventilation; T_{1}=after 60 minutes of mechanical ventilation |

Figure 2: Plasma concentrations of equine IL-6, TNF-α, MPO and ELT in 15D (n=5), 15L (n=11), 30D (n=9) and 30L (n=9) at T_{0} and T_{1}. |