Figure 1. Changes in partial pressure of oxygen in arterial blood after oleic acid administration. Values are mean +/- SD. [white circle], group 1 (gas ventilation); [black triangle], group 2 (aerosolized PGE¹); [white diamond], group 3 (partial liquid ventilation); [black square], group 4 (partial liquid ventilation plus intratracheal PGE¹). *P < 0.0125 versus control data after Bonferroni correction.^aP < 0.0083 versus corresponding data of group 1 after Bonferroni correction.^bP < 0.0083 versus corresponding data of group 2 after Bonferroni correction.^cP < 0.0083 versus corresponding data of group 3 after Bonferroni correction.