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Head-to-tail tandem repeats formation in MPR. (A) Primers used in MPR, primer dimer, and schematic representation of head-to-tail tandem polymer of primer dimer. Mismatched nucleotide at 3′-OH end is in green. (B) An example of a microgene polymer (pYT005). Inserted nucleotides or deletion (Δ) at junction points of a microgene unit is in red.
