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Astrocytes undergo rapid structural modifications. a, An example showing astrocytic process retraction and extension over a 10 min imaging period (confocal maximum projections of the first 4 time points are shown). b, Three-dimensional reconstructions of the area outlined in a over the 10 min period. c, Volume measurements of retracting (red circles) and extending (blue squares) processes plotted over time. Scale bars: a, 10 μm; b, 4 μm.
