介绍了５１０．６ｎｍ激光对造血细胞的刺激作用，促使颗粒－巨噬细胞集落形成单位（ＧＭ－ＣＦＵｃ）增多。从人脐带血中分离制备的有核细胞中，加入集落刺激因子（ＣＳＦ）后进行体外培养，形成的ＧＭ－ＣＦＵｃ为１８．６±１２．６／１０４；如果加入的ＣＳＦ是经激光照射后的细胞制成的，其ＧＭ－ＣＦＵｃ为４０．５±２０．２／１０４；如果先用激光照射脐带血的有核细胞，在培养时加入的ＣＳＦ是未经激光照射后的细胞制成的，也有增殖效应，ＧＭ－ＣＦＵｃ为３６．５±１８．５／１０４；如果脐带血中的有核细胞和制备ＣＳＦ的细胞都用激光照射，发现ＧＭ－ＣＦＵｃ明显增多，其值为５７．４±４１．２／１０４，是未经激光处理者的三倍多 The stimulating effect of 510.6nm laser on hematopoietic cells was introduced, leading to the increase of granulocyte-macrophage colony forming unit (GM-CFUc). GM-CFUc was 18.6 ± 12.6 / 104 when cultured in vitro and cultured in human umbilical cord blood after addition of colony stimulating factor (CSF). If the added CSF was irradiated by laser Of cells with a GM-CFUc of 40.5 ± 20.2 / 104; if umbilical cord blood cells were first irradiated with laser, the CSF added during the culture was made of cells that had not been irradiated with laser , And also had a proliferative effect with GM-CFUc of 36.5 ± 18.5 / 104. If both umbilical cord blood cells and CSF-producing cells were irradiated with laser, a significant increase of GM-CFUc was found with a value of 57.4 ± 41.2 / 104, more than three times of those without laser treatment