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. 2015 Oct 28;10(10):e0141722. doi: 10.1371/journal.pone.0141722

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© 2015 Knör et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 1 — Representative extraction of broad spectrum PCR with GP5+/6+ primer. Three of twelve antrochoanal polyps (ACP) are showing clear bands, and three further weak bands. No bands are visible in negative controls (NK) and the most intense band is present in oropharyngeal carcinoma (OPC) as positive control.