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  • Title: Is nuclear envelope re-formation an inducible event?
    Author: Ghosh S, Paweletz N.
    Journal: Exp Cell Res; 1987 Jul; 171(1):243-9. PubMed ID: 3622634.
    Abstract:
    In large multinucleate cells the nuclei enter mitosis and reach metaphase almost synchronously by interaction of the different parts of the cell, but some degrees of postmetaphase asynchrony still persist. Apart from chromosome movements, the important postmetaphase events are re-formation of the nuclear envelope, chromosome decondensation, and back-formation of the spindle. From ultrastructural studies of multinucleate cells showing asynchronous mitotic progression beyond metaphase, we observed that nuclear envelope re-formation takes place nearly synchronously in all chromosome groups as soon as one group has reached telophase and while others are still in earlier mitotic stages. This indicates that nuclear envelope re-formation is an inducible event independent of the degree of condensation or decondensation of the chromatin and may depend on a factor(s) opposite in behavior to the maturation-promoting factor.
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