nuclear spindle - traduction vers arabe
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nuclear spindle - traduction vers arabe

ARRAY OF MICROTUBULES AND ASSOCIATED MOLECULES THAT FORMS BETWEEN OPPOSITE POLES OF A EUKARYOTIC CELL DURING MITOSIS OR MEIOSIS AND SERVES TO MOVE THE DUPLICATED CHROMOSOMES APART
Spindle fiber; Mitotic apparatus; Nuclear spindle; Mitotic spindles; Metaphase plate; Spindle fibers; Mitotic spindle apparatus; Meiotic spindle; Spindle pole; Mitotic spindle; The spindle apparatus; The Spindle apparatus; Spindle (cell); Anastral microtubules; Spindle poles; Karyokinetic spindle
  • [[Micrograph]] showing condensed [[chromosome]]s in [[blue]], [[kinetochore]]s in [[pink]], and [[microtubule]]s in [[green]] during [[metaphase]] of [[mitosis]]
  • This diagram depicts the organization of a typical mitotic spindle found in animal cells. Chromosomes are attached to [[kinetochore]] [[microtubule]]s via a multiprotein complex called the kinetochore. Polar microtubules interdigitate at the spindle midzone and push the spindle poles apart via [[motor protein]]s. [[Astral microtubules]] anchor the spindle poles to the [[cell membrane]]. Microtubule polymerization is nucleated at the [[microtubule organizing center]].
  • In the centrosome-mediated "search and capture" model (left), microtubules nucleated from centrosomes contact chromosomes by chance and become stabilized at kinetochores to form the spindle. In the chromatin-mediated "self-organization" model (right), microtubules are nucleated around the vicinity of mitotic chromatin and organized into a bipolar array by motor proteins.
  • Cartoon of the dividing epithelium cell surrounded by epithelium tissue. Spindle apparatus rotates inside the cell. The rotation is a result of astral microtubules pulling towards tri-cellular-junctions (TCJ), signaling centers localized at the regions where three cells meet.

nuclear spindle         
‎ المِغْزَلُ النَّوَوِيّ,مِغْزَلُ الانْقِسامِ التَّفَتُّلِيِّ‎
mitotic spindle         
‎ مِغْزَلُ الانْقِسام التَّفَتُّلِيِّ‎
spindle fibers         
‎ أَلْيافٌ مِغْزَلِيَّة‎

Définition

Spindle
·noun The fusee of a watch.
II. Spindle ·noun Any marine gastropod of the genus Fusus.
III. Spindle ·noun A long and slender stalk resembling a spindle.
IV. Spindle ·noun A shaft or pipe on which a core of sand is formed.
V. Spindle ·noun The vertical rod on which the runner of a grinding mill turns.
VI. Spindle ·noun Any marine univalve shell of the genus Rostellaria;
- called also spindle stromb.
VII. Spindle ·noun A slender rod or pin on which anything turns; an axis; as, the spindle of a vane.
VIII. Spindle ·noun A yarn measure containing, in cotton yarn, 15,120 yards; in linen yarn, 14,400 yards.
IX. Spindle ·noun A solid generated by the revolution of a curved line about its base or double ordinate or chord.
X. Spindle ·vi To shoot or grow into a long, slender stalk or body; to become disproportionately tall and slender.
XI. Spindle ·noun The shaft, mandrel, or arbor, in a machine tool, as a lathe or drilling machine, ·etc., which causes the work to revolve, or carries a tool or center, ·etc.
XII. Spindle ·noun The long, round, slender rod or pin in spinning wheels by which the thread is twisted, and on which, when twisted, it is wound; also, the pin on which the bobbin is held in a spinning machine, or in the shuttle of a loom.

Wikipédia

Spindle apparatus

In cell biology, the spindle apparatus is the cytoskeletal structure of eukaryotic cells that forms during cell division to separate sister chromatids between daughter cells. It is referred to as the mitotic spindle during mitosis, a process that produces genetically identical daughter cells, or the meiotic spindle during meiosis, a process that produces gametes with half the number of chromosomes of the parent cell.

Besides chromosomes, the spindle apparatus is composed of hundreds of proteins. Microtubules comprise the most abundant components of the machinery.