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PCR products amplified from DNA purified from human EDTA-blood samples (lanes 1 to 7) and from positive (+) and negative (−) controls. (A) Primary amplification products. The expected size (932 bp) is indicated. (B) Nested amplification products. The expected size (546 bp) is noted. Lanes M are size standards and show the HaeIII digest of phage φX174 DNA.
