TRIS (tris(hydroxymethyl)aminomethane):
tris, or tris(hydroxymethyl) aminomethane, is a common biological buffer, used throughout the DNA extraction process. During extraction from any number of sources, DNA is pH sensitive. During cell lysis, removal of unwanted cellular components and precipitation, tris is used to maintain a stable pH. Additionally, it plays a particularly important role in cell lysis.
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