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. 2005 Jun 23;172(7):899–906. doi: 10.1164/rccm.200503-384OC

Figure 1.

Figure 1.

Respiratory tract and pulmonary vascular resistances (mean and SD) in four preterm lambs that received iNO at 5–15 ppm (dark bars) compared with four preterm lambs that did not receive inhaled nitric oxide (iNO; white bars) and four term lambs that did not receive iNO (hatched bars) during 3 weeks of mechanical ventilation. *Significant difference compared with the group of four term lambs, p < 0.05; †significant difference compared with the group of four preterm lambs given iNO, p < 0.05. BW = bodyweight.