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Three samples per group were randomly used. A1: Ladder, B1-C1-D1: FFPE old samples (2014 – 2016), E1-F1-G1: FFPE medium samples (2017–2019), H1-A2-B2: FFPE recent samples (2020 – 2021), C2-D2-E2: Blood samples, F2-G2-H2: Fresh tissue samples.
