 ellipses represent proteins that are not known to be either. The color of the nodes denotes the protein expression relative to the previous time point on a gradient of dark blue to deep red, with dark blue indicating the relatively lowest expression and deep red indicating the relatively highest expression. The color of the ring surrounding the nodes denotes when the protein showed differential expression, with black rings indicating that in both comparisons (T0 and T0) the protein showed altered expression, the yellow rings indicate altered expression in only the first comparison (T0), and the gray rings indicate altered expression in only the second comparison (T0). **a** shows proteins associated with carbohydrate metabolism