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On the cover: Confocal image of a zebrafish in vivo reporter line for an identified human endocrine pancreatic enhancer that drives GFP expression (green). Somatostatin-producing cells of the endocrine pancreas are labeled in red (sst:mCherry) and cell nuclei are counterstained with DAPI (blue). This image was acquired using a Leica SP5II confocal microscope. Photography courtesy of Ana Eufrásio, i3S–Instituto de Investigação e Inovação em Saúde, Universidade do Porto, and IBMC–Instituto de Biologia Celular e Molecular, Porto, Portugal. The article by Eufrásio et al., “In Vivo Reporter Assays Uncover Changes in Enhancer Activity Caused by Type 2 Diabetes–Associated Single Nucleotide Polymorphisms,” appears in this issue of Diabetes (p. 2794).

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