'Random' cell movement is directed from within

Cell biologists have discovered that message-relaying proteins inside cells always initiate the cellular projections that act as hands to help cells "crawl." The messenger protein network was known to be required for directional movement but scientists now know that it can self-activate spontaneously to direct random movement as well.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/2...