The nucleolus

نویسندگان

  • C. E. Lyon
  • A. I. Lamond
چکیده

Are they always about? Not necessarily. They come and go, disappearing in mitosis from late prophase until telophase. During this period, some nucleolar antigens, including RNA polymerase I and topoisomerase I, remain associated with tandemly repeated clusters of ribosomal RNA genes on the condensed chromatin — these chromosomal regions are presumptuously known as nucleolar organising regions (NORs). But other nucleolar components are dispersed throughout the mitotic cytoplasm.

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عنوان ژورنال:
  • Current Biology

دوره 10  شماره 

صفحات  -

تاریخ انتشار 2000