This entry was posted on Friday, June 29th, 2007 at 10:36 pm and is filed under Biology.
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I would suspect it's sped up a bit, but MTs are fast – in tasks like motility and transport they can assemble in the direction they're going while disassembling where they've just been. Sort of like Magneto's metal walkways in X-Men… For more info on the dynamics of tubulin and MTs, try these: