Gravity: It's the law, even for cells (w/ Video)

Everybody knows that cells are microscopic, but why? Why aren't cells bigger? The average animal cell is 10 microns across and the traditional explanation has been cells are the perfect size because if they were any bigger it would be difficult to get enough nutrients and energy to support them. Which is roughly where things stood until last year when Princeton bioengineers Marina Feric and Cliff Brangwynne published a paper in Nature Cell Biology describing their probing of cellular inner space, the cell nucleus, and their discovery that gravity could limit cell size.

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