Immunoprecipitation is a method for isolating a target molecule from a solution or cell lysate using an antibody that recognizes it. In the most common version, binding of antibody to a peptide antigen forms an aggregate (including any binding partners or complexes) that precipitates and can be concentrated by centrifugation.
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Technical concerns about immunoprecipitation of methylated fetal DNA for noninvasive trisomy 21 diagnosisNature Medicine 18, 1327–1328
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