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. 2015 Oct 29;12:88. doi: 10.1186/s12977-015-0215-z

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© Desai et al. 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 6 — Retention of GFP-Vpr by purified HIV-1 cores. a Analyses of HIV-1 cores released upon centrifugation of concentrated HIV-1 particles through a layer of Triton X-100 detergent. Proteins in the fractions were concentrated by TCA precipitation and subjected to SDS-PAGE and immunoblotted for gp120, GFP, HIV-1 CA, and cyclophilin A (CypA). Numbered fractions were collected from the top to the bottom of the gradient. Viral cores sedimented to fractions 9–11. b Analysis of GFP-Vpr-labeled HIV-1 particles in parallel following centrifugation on a gradient lacking the detergent layer. Intact HIV-1 particles sedimented to fractions 2–5