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. 2011 Oct 27;7(10):e1002346. doi: 10.1371/journal.pgen.1002346

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This is an open-access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication.

This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration, which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

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In this paper, we examine the expression patterns of a subset of anterior/posterior (AP) patterning genes; general information on the regulatory relationships between the genes in our dataset is shown. Not all regulatory relationships have been precisely defined; therefore, the network is shown as a hierarchy between classes of genes (maternal, gap, terminal and pair-rule) with known interactions within classes. For example, the gap genes are known to cross-repress one another [58], and the primary pair-rule genes are thought to regulate the secondary pair-rule genes [24], [59].