Figure 1: A representative 2D-gel image of Cy5 and Cy3 - labeled PFC proteins. Proteins from control rat PFC were labeled with Cy5 and shown as pseudo-green fluorescence. Lithium-treated rat PFC proteins were labeled with Cy3 and shown as pseudo-red fluorescent spots. In the merged image, shown in the figure, proteins with equal abundance appear as yellow spots, while proteins that are increased or decreased after lithium treatment appear as red or green spots, respectively. The numbered protein spots were identified and are discussed in this paper.