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Cell‐free DNA (cfDNA) signals at repetitive elements. (a) cfDNA at the first 1,000 bp of L1HS consensus sequence. The dotted lines indicate replicates in different age groups, and the solid lines mark the average of cfDNA signals in the respective age group. (b) cfDNA signals in dimeric AluY. The dotted lines indicate replicates in different age groups, and the solid lines mark the average of cfDNA signals in the respective age group
