Representative image of the separation of <i>P. volucre</i> proteins on a 2D-DIGE gel.

<p>On this merged image, the non diapausing group was labeled with Cy3 (green) and diapausing group was labeled with Cy5 (red). Identified proteins showing differential expression level are annotated on the gel with their respective spot number; complete properties of identified proteins are given in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0032606#pone-0032606-t002" target="_blank">Table 2</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0032606#pone.0032606.s001" target="_blank">Table S1</a>.