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  • Title: Density invariance of cultured Chinese hamster cells with stage of the mitotic cycle.
    Author: Anderson EC, Petersen DF, Tobey RA.
    Journal: Biophys J; 1970 Jul; 10(7):630-45. PubMed ID: 5465290.
    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.
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