2.3.1.54 6.5 - assay at 672873 2.3.1.54 7 7.5 Tris-acetate buffer 487218 2.3.1.54 7.4 - assay at 727989 2.3.1.54 7.5 - - 487218, 487222, 487234 2.3.1.54 7.5 - assay at 675371 2.3.1.54 7.6 - assay at 672694 2.3.1.54 7.8 8.4 - 487221 2.3.1.54 7.8 8.5 forward direction 487220 2.3.1.54 8.5 - assay at 671620