图像分析表明，气血屏障的厚度，随胎龄的增长而变薄。
The thickness of blood-air barrier was measured by image analyzer.
并对肺泡上皮细胞、气血屏障造成严重的损伤 ，使细胞器出现空泡、肿胀或呈碎裂状改变 ；
The type I and type II alveolar cells appeared swollen, vacuolated and broken with the blood air barrier severely damaged and surfactants significantly decreased.
并对肺泡上皮细胞、气血屏障造成严重的损伤 ，使细胞器出现空泡、肿胀或呈碎裂状改变 ；
The type I and type II alveolar cells appeared swollen, vacuolated and broken with the blood air barrier severely damaged and surfactants significantly decreased.
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