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About the Cover

Cover Figure


COVER The sea urchin, Strongylocentrotus purpuratus, has been a premier model for understanding the gene networks that underlie development. Shown are sea urchin pluteus larvae stained to reveal the ectoderm (green), mesoderm (blue), and endoderm (red). A special section beginning on page 938 describes the sequencing of the genome of the sea urchin and initial insights obtained from the sequence. Images: Esther Miranda and David R. McClay

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