Polarized radicals.

Liberman, Louisa M; Benfey, Philip N · Cell · 2013

basic_science · Level V

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Abstract

Establishing polarized surfaces enables cells to carry out specialized tasks. In this issue, Lee et al. present a mechanism for cell polarization in which localized peroxidases are used to position the Casparian strip, a diffusion barrier deposited between endodermal cells in plant roots.