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Bursts of neural activity in an entire larval zebrafish ' x0 H& ]) V; P& Wbrain expressing a calcium reporter in every neuron. Two different time points # @3 l: d! G8 L
are shown in red and blue. Image by Philipp Keller, Misha Ahrens and Kristin * q# y3 O. _! v7 gBranson (Howard Hughes Medical Institute, Janelia Farm Research Campus). }5 |1 A' t& G. V, V1 n