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. 2014 Sep 23;8:167. doi: 10.3389/fnsys.2014.00167

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Copyright © 2014 Salloum, Chen, Velet, Manzoor, Elkin, Kidd, Coughlin, Yurosko, Bou-Anak, Azadi, Gohlsch, Schneider and Kaltenbach.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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3D-reconstructions and metrics of spines and axo-spinous terminals of a secondary branch of an apical dendrite. (A) Cartography of spines, represented in different colors. Arrow points to a filopodium. (B) Histogram showing the probability distribution of spines of different volumes. (C) Reconstruction of synaptic terminals, (different colors) ending on spines shown in panel A. (D) Probability distribution of terminals of different sizes on dendritic spines (compare with Figure 5G). Note that the short stretches of axon beyond the terminal shown in panel (C) were not included in the measures of terminal volume (see Section Methods). (E–F) 3D-reconstructions of axons showing their en passant swellings (arrows) and horizontal trajectories (arrowheads) consistent with their identities as parallel fibers.