新生儿生理性免疫功能低下,且其辅助T细胞发育不平衡,易发生感染。已有研究表明早产儿免疫功能较足月儿更不成熟。本研究采用双色免疫荧光标记法(FLM ) ,分别测定了60例足月儿和早产儿外周血T细胞亚群的水平,探讨早产儿T细胞亚群的特点。1　资料和方法1·1　一般资料　早产儿组 Newborn physiological immune function is low, and its supporting T cell imbalance, prone to infection. Studies have shown that premature children immune function more mature than full-term children. In this study, two-color immunofluorescence labeling (FLM) was used to detect the levels of T lymphocyte subsets in peripheral blood of 60 full-term infants and preterm infants, and to explore the characteristics of T cell subsets in preterm infants. 1 Materials and Methods 1.1 General Information Premature children group