Figure 3From: CMPF: Class-switching minimized pathfinding in metabolic networksAn example illustrating the sets P Ï• ( r ) and P ( r ). A bipartite graph showing reactions r1, r2, r3 and compounds c1, c2, c3. The transition from r1 to r2 can be made by using pathway b but the transition from r2 to r3 requires a switch from pathway b to one of the pathways d,e,f.Back to article page