Gradient gel electrophoresis showed only one band of GGT activity.
聚丙烯酰胺梯度凝胶电泳显示一条GGT活性区带。
Promoter activity and protein fusions of PLT homologues display gradient distributions with maxima in the stem cell area. PLT activities are largely additive and dosage dependent.
本文中我们把根系形成必需的四种PLT同源族用进化枝表示出来，启动子活性及PLT蛋白融合显示出在干细胞上最大的坡度分布。
The purity of Human embryonic MSC which isolated by density gradient centrifugation and cultured by MEM culture medium in vitro is high. The activity of MSC is good.
用密度梯度离心法分离后MEM培养基体外培养的人胚胎msc纯度高，生物活性好。
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