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应用造血祖细胞体外培养和流式细胞术（ＦＣＭ），观察了脐血中粒－单系祖细胞（ＣＦＵ－ＧＭ）和红系爆式集落（ＢＦＵ－Ｅ）的数量和特性，并对其细胞增殖周期和成人骨髓及外周血做比较。结果显示，脐血中含丰富的ＣＦＵ－ＧＭ和ＢＦＵ－Ｅ，其数量低于骨髓而超过外周血水平；脐血ＢＦＵ－Ｅ对红细胞生成素和爆，式促进活素表现出更高的敏感性；脐血Ｓ期、Ｇ＿２＋Ｍ期及Ｓ＋Ｇ＿２Ｍ期细胞数均明显低于骨髓，虽略高于外周血各期细胞数，但差别无显著性意义。
Using hematopoietic progenitor cells cultured in vitro and flow cytometry (FCM), the numbers and characteristics of CFU-GM and BFU-E in umbilical cord blood were observed and analyzed. Cell proliferation cycle and adult bone marrow and peripheral blood for comparison. The results showed that umbilical cord blood rich in CFU-GM and BFU-E, the number is lower than the bone marrow and peripheral blood levels; cord blood BFU-E on erythropoietin and burst, promoting activin showed higher sensitivity The number of cells in S phase, G 2 + M phase and S + G 2 M phase in umbilical cord blood was significantly lower than that in bone marrow, although it was slightly higher than that in peripheral blood cells, but the difference was not significant.