Intracellular transport by active diffusion.

  title={Intracellular transport by active diffusion.},
  author={Clifford P Brangwynne and Gijsje H Koenderink and Fred C MacKintosh and David A. Weitz},
  journal={Trends in cell biology},
  volume={19 9},
All substances exhibit constant random motion at the microscopic scale. This is a direct consequence of thermal agitation, and leads to diffusion of molecules and small particles in a liquid. In addition to this nondirected motion, living cells also use active transport mechanisms, such as motor activity and polymerization forces that depend on linear biopolymers and are therefore fundamentally directed in nature. Nevertheless, it has become increasingly clear that such active processes can… CONTINUE READING

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