Abstract
To verify non-random positioning and to define the stability of the mitotic spindle orientation in neuroepithelial cells of mouse foetuses, computer — assisted morphometric analysis at the light microscopy level was performed. It was confirmed that the mitotic spindle axis is positioned non-randomly in relation to the cell polarity axis and could be displaced only within a narrow range. This orientation was found to be attained at metaphase and it does not change until telophase is completed. However, in relation to the long axis of the neural tube the mitotic spindle axis was found to be positioned randomly. In the light of these findings centrosome movement and positioning are discussed.
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