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Cover Figure

ONLINE COVER This week features a Research Article that describes how the plant pathogen Agrobacterium tumefaciens prevents degradation of its key virulence factor in infected host cells. The image shows a weeping fig with crown galls or tumors caused by Agrobacterium infection. [Image: Florida Division of Plant Industry Archive/Florida Department of Agriculture and Consumer Services]

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