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Cover Picture: A cultured cortical neuron (10 d in vitro) overexpressing green fluorescent protein-labeled postsynaptic density-95 (PSD-95) (green) has been colabeled with sulforhodamine (red). Six frames are displayed that show consecutively acquired time-lapse images (time stamp in minutes). A PSD-95 cluster (white arrowhead) is located in the tip of a filopodial structure. During ~1 hr, the PSD-95 moves out of the filopodium into the dendritic shaft. Splitting of filopodium into a two-headed structure can be observed at 27 min. For details, see the article by Prange and Murphy in this issue (pages 9325-9333).
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