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Cover Figure

ONLINE COVER This week's issue features a Research Article describing how protein kinase G (PKG) regulates differentiation of and heat production by brown adipose tissue in mice. The image shows the infrared thermal profiles of a newborn wild-type (right) and PKGI-deficient (left) mouse. Because the development of brown adipose tissue in PKGI-deficient mice is impaired, they have lower body temperatures. Red and white represent lower and higher temperatures, respectively. [Image: Bodo Haas, Institute for Pharmacology and Toxicology, University of Bonn]

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