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. 2016 Mar 8;12:1744806916629065. doi: 10.1177/1744806916629065

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© The Author(s) 2016

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 3.0 License (http://www.creativecommons.org/licenses/by-nc/3.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page(https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Proportions of excitatory neurons in laminae I–II that belong to different neurochemical populations. The pie chart shows the proportions of all excitatory interneurons in laminae I–II that are accounted for by each neurochemical population. Note that there is no overlap between GRP-EGFP and NKB-expressing (PPTB-immunoreactive) populations, but a minimal overlap between each of these and the neurotensin population. In contrast, SST is expressed by the majority (59%–91%) of cells in each of the other peptide populations, as well as by many (49%) of those that lack these other peptides.