: electrophoresis in which molecules (as proteins and nucleic acids) migrate through a gel and especially a polyacrylamide gel and separate into bands according to size
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Biochem.
a technique for separating protein molecules of varying sizes in a mixture by moving them through a block of gel, as of agarose or polyacrylamide, by means of an electric field, with smaller molecules moving faster and therefore farther than larger ones.
Useful english dictionary. 2012.