Based on temperature and rainfall data in Xinhui from 1957 to 2003,the factors which affect durative high temperature weather from June to September are retrieved with the method of factor combination analysis.
利用新会195 7～2 0 0 3年气温和降雨量资料,应用因子组合方法[1] 寻找影响新会6～9月长时间持续高温天气出现的因子。
This study was purposed to explore the effect of different cytokine combinations on the expansion of the mononuclear cells drived from umbilical cord blood (CB) ex vivo and expression of CXCR4 and CD49d on CD34~+ cells after expansion.
为了探讨不同的细胞因子组合对脐血单个核细胞体外的扩增作用及扩增后CD49d和CXCR4的变化,将新鲜脐血标本分离的单个核细胞接种于含有不同细胞因子组合的无血清无基质培养体系中培养7天,在0天,7天检测有核细胞数,CD34+细胞数及CD34+CXCR4+,CD34+CD49d+的细胞数和集落形成单位(CFU)数。