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Politics : Evolution -- Ignore unavailable to you. Want to Upgrade?

To: LLCF who wrote (3302)	12/27/2009 8:56:08 PM
From: LLCF	1 Recommendation Read Replies (1) \| Respond to of 69300

<Of course every cell on the planet is VERY intelligent...> Cells migrate all over your body all the time... it's one of the main occurances of development in the womb: Migration without a clutch Shuh Narumiya1 & Naoki Watanabe1 1.Shuh Narumiya and Naoki Watanabe are in the Department of Pharmacology, Kyoto University Faculty of Medicine, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan. AbstractDuring cell migration, actin retrograde flow is counteracted by integrin-mediated adhesion to the underlying matrix, providing traction for forward movement. But in the absence of this 'clutch' mechanism, some types of cells adapt their actin polymerization to maintain similar migration speeds. Cells migrate by protruding the plasma membrane in the direction of migration, followed by locomotion of the cell body and tail retraction1. Membrane protrusions form at the leading edge or pseudopodia, and are driven by actin polymerization at this site. nature.com DAK