气血屏障是指肺泡内氧气与肺泡隔毛细血管内血液携带二氧化碳间进行气体交换所通过的结构。 它包括六层结构:含肺表面活性物质的液体层、肺泡上皮细胞层、上皮基底膜、肺泡上皮和毛细血管之间的间隙(基质层)、毛细血管的基膜和毛细血管内皮细胞层。
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.
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