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近年来,美国和法国的专家们合作,从实验和临床两方面研究脐带血于细胞移植治疗某些血液病的可能性,并已取得引人注目的结果,现就其进展介绍如下。前言在成人的循环血液中可以发现造血干/祖细胞,但其数量只为骨髓的10～100分之一。在个体发育中,干/祖细胞最早发生于卵黄囊,稍后在肝脏,然后发生于胎儿骨髓内。人的脐带血一般被抛弃不用,但在试管内作克隆试验证明其内含有造血干/祖细胞,
In recent years, experts from the United States and France have been working together to study the possibility of cord blood transplantation in the treatment of certain blood diseases both experimentally and clinically, and remarkable results have been obtained. The progress is now introduced as follows. Foreword Hematopoietic stem / progenitor cells can be found in the circulating blood of adults, but their numbers are only 10 to 100% of the bone marrow. In individual development, stem / progenitor cells first occur in the yolk sac, later in the liver, and then in the fetal bone marrow. Human umbilical cord blood generally abandoned without, but in vitro test for cloning proved that it contains hematopoietic stem / progenitor cells,