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. 2014 Apr 8;8(2):024110. doi: 10.1063/1.4870772

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1932-1058/2014/8(2)/024110/14/$30.00

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FIG. 4. — (a) The OCR values of BHK-21 cells after 10 h of treatment with different concentrations of carrageenan. The error bar of each OCR value indicates three different measurements. (b) The normalized OCR (OCR(t = 7 hpi)/OCR_(n), %) of DENV-infected BHK-21 cells at m.o.i. = 0 to 2 with or without pre-treatment with 1 mg/ml carrageenan. The anti-DENV activity of carrageenan was normalized and expressed as OCR(t = 7 hpi)/OCR_(n), where OCR(t = 7 hpi) and OCR_(n) denoted the OCR value of the infected cells at 7 hpi and the averaged OCR value of normal cells without viral infection and carrageenan treatment, respectively. The OCR(t = 7 hpi)/OCR_(n) values of the infected BHK-21 cells without pre-treatment with carrageenan are denoted by a dashed line in Fig. 3(c).