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Cell biology

Polarity bites

Cells often need to have polarity to function — cells lining the gut, for instance, secrete digestive enzymes only from their intestinal side. A protein called Bitesize is pivotal in determining which way is up.

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Figure 1: Assembling adherens junctions between epithelial cells.


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Fehon, R. Polarity bites. Nature 442, 519–520 (2006).

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