Methods The LCP levels of plasma and red blood cell membranes in 28 preterm infants at birth and their mothers were measured by gas chromatography.

• 方法用毛细管气相色谱法测定28例早产儿脐静脉血(简称脐血)及其母亲静脉血血浆和红细胞膜LCP水平，同时测定早产儿出生时体重、身长、头围。