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June 2007 Volume 25 No 6
Transgenic Caenorhabditis elegans expressing green fluorescent protein (GFP) under the control of the C12D8.1 promoter, superimposed on a post-embryonic development chronogram. Vidal and colleagues quantify the spatiotemporal activity of worm promoters using flow cytometry to record longitudinal GFP intensity profiles (p 663). Credit: Eric Smith
