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Cover Figure

ONLINE COVER This week features a Research Article identifying a pathway whereby the tumor suppressor p53 activates miRNA-34 to inhibit Wnt signaling and colorectal cancer cell invasiveness. The image depicts an assay of cancer cell invasion. [Image: Xiao-Yan Li, University of Michigan, Ann Arbor]

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Science Signaling. ISSN 1937-9145 (online), 1945-0877 (print). Pre-2008: Science's STKE. ISSN 1525-8882