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Serial serum samples analysis showing IgA and IgG antibody progression for one patient with Epstein-Barr virus small RNA 1 in situ hybridization (EBER-ISH) positive tumor sample. The progression shows prediagnostic IgA and IgG antibody levels in a single patient over time. Blood was drawn 31, 24, 23, 20, 19 and 18 years prior to diagnosis. The dashed line indicates the lower limit of quantification of 30 MFI.
