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Fig. 3A

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Fig. 3A Longitudinal observation of SARS-CoV-2 RT-PCR and IgG assays in COVID-19 cases. (A) RT-PCR results and the IgG assay index value for the cases shown in (seroconversion observed). (B) RT-PCR results and the IgG assay index values for the cases shown in Fig. 3B (positive for IgG in the first antibody assay).
Abbreviations: SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; COVID-19, Coronavirus disease 2019; RT-PCR, reverse transcription-polymerase chain reaction.
Ann Lab Med 2021;41:568~576 https://doi.org/10.3343/alm.2021.41.6.568

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