Representative 2D-DIGE gel of CyDye-labeled CSF-proteins.

<p>Indication is given in black-white manner for better visibility. Arrows indicate identified protein spots: number 1 for Serpin A1, number 2 for Fetuin A, number 3 for Ceruloplasmin, number 4 for Serpin F1, number 5 for Haptoglobin and number 6 for Zinc-alpha-2 glycoprotein (numbers correlate with the numbers in the first row of <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0048783#pone-0048783-t002" target="_blank">Table 2</a>). The magnification shows spot number 1 in CyDye overlay. Abbreviations: pI = isoelectric point of the proteins; MW  =  molecular weight in kilo-Dalton.</p>