Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13027-020-00308-5/MediaObjects/13027_2020_308_Fig1_HTML.png)
Prevalence of EBV infection in nasal polyps (NP), sinonasal inverted papillomas (SIP), and sinonasal squamous cell carcinomas (SNSCC) according to results of SYBR green real-time PCR. a-c melting curves of GAPDH, BALF5, and BZLF1, respectively, of positive-, negative-control, and tested samples. d EBV prevalence in the tested population