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. 2015 Dec 30;19(6):pyv138. doi: 10.1093/ijnp/pyv138

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© The Author 2015. Published by Oxford University Press on behalf of CINP.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 2. — Two-dimensional gel electrophoresis. Proteins are extracted from a tissue or other sample and then separated by electrophoresis in two dimensions. The first dimension is isoelectric focusing, during which proteins are separated according to their isoelectric points (the state of zero net charge). The second dimension is detergent-based gel electrophoresis, during which the proteins are separated according to apparent molecular weight. The resulting protein spots can be subjected to image analysis and quantitated.