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. 2022 Dec 27;13:100302. doi: 10.1016/j.biosx.2022.100302

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Fig. 4 — a: Immunofluorescence detection of SARS-CoV-2 RNA with S-PP1 slides in saliva samples containing 50, 12, 6 and 3 copies/μL of the virus. Fluorescence was revealed through SYBR Green emission. b: Control experiments; S-PP1 slides with SYBR Green I only, S-PP1 slides with MERS virus at 50 copies/μL, S-PP1 slides with pure saliva, S-Suc slides with SARS-CoV-2 virus at 50 copies/μL. Scale bar: 10 μm.