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Hedgehog Signaling Regulates Segment Formation in the Annelid Platynereis

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Segmental Mode of Neural Patterning in Sipuncula

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Complementary striped expression patterns of NK homeobox genes during segment formation in the annelid Platynereis

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Segmental patterning of the vertebrate embryonic axis

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Genomic Organization and Expression Demonstrate Spatial and Temporal Hox Gene Colinearity in the Lophotrochozoan Capitella sp. I

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Ancestral Notch-mediated segmentation revealed in the cockroach Periplaneta americana

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