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培养的中国仓鼠细胞密度随有丝分裂周期阶段的不变性。

Density invariance of cultured Chinese hamster cells with stage of the mitotic cycle.

作者信息

Anderson E C, Petersen D F, Tobey R A

出版信息

Biophys J. 1970 Jul;10(7):630-45. doi: 10.1016/S0006-3495(70)86325-1.

Abstract

Isopycnic banding of Chinese hamster line CHO cells in Ficoll gradients shows that a population in balanced, exponential growth is very homogeneous with respect to density, the coefficient of variation of the density distribution spectrum being less than 5% of the mean reduced density (i.e. density minus one). Similar measurements on synchronized cultures indicate that reduced density varies by less than 2% around the life cycle. The mean density of CHO cells in F-10 growth medium is calculated to be 1.051 after correction for osmotic effects of the Ficoll gradient.

摘要

中国仓鼠CHO细胞系在菲可密度梯度离心中的等密度沉降显示,处于平衡指数生长状态的细胞群体在密度方面非常均匀,密度分布谱的变异系数小于平均折光密度(即密度减去1)的5%。对同步培养物进行的类似测量表明,在整个生命周期中,折光密度的变化小于2%。经菲可密度梯度渗透压效应校正后,计算得出F-10生长培养基中CHO细胞的平均密度为1.051。

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