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(A) TE buffer (20 mM Tris·HCl, pH 7.6/1 mM EDTA). (Inset) A fragment of the high-resolution image taken over 380 × 380 nm. The DNA width between the arrows is ≈3 nm. (B) Computer traces of a number of images of pSA509 plasmid (Upper) and mini circles (Lower).
