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Cover Figure


COVER The Caenorhabditis elegans polarity regulator PAR-2, here tagged with green fluorescent protein, is uniformly distributed in a one-cell embryo (top left) but localizes to the posterior before the first cell division (bottom right). Mechanisms involved in the establishment and maintenance of polarity are featured in the special section in this issue. 1941 [Photo: Adrian Cuenca]

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Science. ISSN 0036-8075 (print), 1095-9203 (online)