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Mutational status determination of EGFR and KRAS genes using BEAMing technology. A mutant allelic fraction (MAF) of 55.33% for the EGFR exon 19 deletion was detected in exosomal DNA from the H1650 cell line (left panel), whereas a mutant fraction of 79.12% was present in SW900 exosomal DNA for a KRAS mutation (exon 2, codon 12–13) (right panel).
