in order to investigate the mechanism behind ventilation-induced pulmonary prostacyclin production at birth , chloralose anesthetized , exteriorized , fetal lambs were ventilated with a gas mixture that did not change blood gases ( fetal gas ) and unventilated fetal lungs were perfused with blood containing increased o2 and decreased co2 .
C0015965
fetal
C1517163
fetal lungs