Enlarged sections of 2-DE and 2-PE gel images.

<p>Enlarged sections of gel images obtained with 2-DE (panel A) and 2-PE (panel B). The similar resolution of spots 1–4 in the two experimental sets can be visually appreciated. Protein spots 1–4 of 2-PE and 2-DE maps were identified by mass spectrometry analysis as different isoforms of triosephosphate isomerase (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0030911#pone.0030911.s001" target="_blank">Table S1</a> for MS protein identification parameters).