Microscopy from Scientific Research

The endogenous DopEcR-Tango signal in the whole gut (upper) and the CCR (lower). Flies are presented with only 5% sucrose solution (upper and lower left) or with a choice between 5% sucrose and 5% sucrose + 6 mM copper solution (lower right) for 2 days. SeeSTAR Methodsfor the experimental details. Scale bars, 200 μm (upper) and 50 μm (lower). See alsoFigure S4showing the Tango signal in the brain.

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