Are membranes of the mitotic apparatus translocated by microtubules?
During all mitotic stages membranous structures can be found around and within the mitotic apparatus of HeLa cells. A careful ultrastructural analysis partly by means of stereo-electron microscopy of semithin (0.5 microns) sections reveals a close association of membranes and microtubules in many regions of the mitotic apparatus. The contact can be direct or via connecting structures (cross-bridges). Referring to various hypotheses concerning the translocation of membranous structures in the cytoplasm of interphase cells (see Suchard and Goode, 1982), the assumption that microtubules participate in the transport of membranous structures in the mitotic apparatus is discussed in detail.
D001692:Biological Transport; D006367:HeLa Cells; D006801:Humans; D007425:Intracellular Membranes / Q000502:physiology* / Q000648:ultrastructure; D008870:Microtubules / Q000502:physiology / Q000648:ultrastructure; D008938:Mitosis; D009685:Nuclear Envelope / Q000648:ultrastructure; D008941:Spindle Apparatus / Q000502:physiology* / Q000648:ultrastructure