Precipitate the DNA with ethanol in the presence of 0.3 M sodium acetate (pH 5.2) and dissolve in 90 μl of Tris/EDTA (TE) buffer (pH 7.6). 10| To the DNA, add 10 μl 10× T4 polynucleotide kinase ...
Commercial heat packs (containing iron and water, or supersaturated sodium acetate) and cold packs (various ammonium salts) can be used to show exo- and endothermicity. Heat packs that contain iron ...
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