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Cover Figure

COVER This week's issue features a Review about NAADP and how it contributes to calcium signaling. The image is a crystal of the CD38 protein bound to NAD, the NAADP precursor. [Image: Christopher Bickel, AAAS]

[Table of Contents]

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