2.7.7.39 6.9 9.5 - 645242 2.7.7.39 7 - assay at 737438 2.7.7.39 7 - Tis-maleate buffer 645240 2.7.7.39 8 - - 645240 2.7.7.39 8 - assay at 645246 2.7.7.39 8 - Tris-HCl buffer 645240