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TECHNICAL ARTICLE
Year : 2012  |  Volume : 4  |  Issue : 9  |  Page : 429-434

Western blot: Technique, theory, and trouble shooting


Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada

Correspondence Address:
Ping-Chang Yang
Department of Pathology & Molecular Medicine, McMaster University, Room T3303, 50 Charlton Ave East, Hamilton, ON
Canada
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1947-2714.100998

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Western blotting is an important technique used in cell and molecular biology. By using a western blot, researchers are able to identify specific proteins from a complex mixture of proteins extracted from cells. The technique uses three elements to accomplish this task: (1) separation by size, (2) transfer to a solid support, and (3) marking target protein using a proper primary and secondary antibody to visualize. This paper will attempt to explain the technique and theory behind western blot, and offer some ways to troubleshoot.


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