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. 2015 Mar 24;11(4):998–1009. doi: 10.1080/21645515.2015.1009811

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© 2015 The Author(s). Published with license by Taylor & Francis Group, LLC

© Bo Ma, Li-Fang He, Yi-Li Zhang, Min Chen, Li-Li Wang, Hong-Wei Yang, Ting Yan, Meng-Xiang Sun, and Cong-Yi Zheng

This is an Open Access article distributed under the terms of the Creative Commons Attribution-Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. The moral rights of the named author(s) have been asserted.

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Figure 6. — Retrovirus tests of Walvax-2. The results were observed by mirror electron microscopy(200Kv 5000x/160Kv 7800x). The arrows point to virus particles detected as shown in the picture. (A) and (A-1) were represented positive controls (Sp2/0-Ag14), (A-1) was partial enlarged detail of (A). (B) was represented negative control (MRC-5). (C) was represented the cells of Walvax-2 of the 24th passage.