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About the Cover
Cover: Optical sections of an Arabidopsis thaliana stoma accumulating green fluorescent proteins (GFPs) in the nuclei. One selected section is enlarged on a 0.2 
m stepped montage (top-left to bottom-right). Stomatal guard cells and chloroplasts are visualized by differential interference contrast optics (red). GFP is fused to the lac-repressor and a nuclear localization signal. Some of the GFP fusion proteins are bound to lac-operator array-tagged chromatin loci and result in bright green fluorescent spots, whereas unbound GFP fusion proteins are visualized as diffused green fluorescence inside the nucleus. See article by N. Kato and E. Lam (pp. 2195-2201).
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