nuclear division index

German: Kernteilungsindex
Japanese: 核分裂指数

Cell biology. Abbr. NDI. Indication of the vitality of a cell culture undergoing genotoxic treatment. The proportion of binucleated cells in all cells is calculated. The value of NDI lies between 1 and 2.
NDI = (number of mononucleate cells + 2*number of binucleate cells + 3*number of trinucleate cells + 4*numbers of cells with 4 nuclei) divided by the number of all cells.

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