为研究各种Lewis表现型在中国人中的发育状况,作者对来自中国婴儿和幼儿的487份血标本进行定型,并对其中部分婴儿进行了随访调查。 材料和方法 细胞标本的收集:脐血红细胞标本取自凝固血液标本的游离红细胞,新生儿和小于2岁的幼儿血标本用肝素抗凝微量血比积毛细管自足跟部穿刺采集。收集了120例新生儿脐血,其中83例于生后48～72小时之间取样,36例于生后4～7天取样。5例婴儿于2个月～2年之间再次取 To study the developmental status of various Lewis phenotypes in Chinese, 487 blood samples from infants and young children in China were screened and some of the infants were followed up. Materials and Methods Collection of Cell Specimens: Umbilical Blood Red Blood Cells Specimens were obtained from free blood cells from coagulated blood samples. Neonates and young children under 2 years of age were collected from the heel-anticoagulant micro-volume hematocrit using a heparinized anticoagulant. A total of 120 neonatal cord blood samples were collected, of which 83 were sampled 48 to 72 hours after birth and 36 were sampled 4 to 7 days after birth. 5 cases of infants in 2 months to 2 years to take again