Figure 3From: Nitrogen-driven stem elongation in poplar is linked with wood modification and gene clusters for stress, photosynthesis and cell wall formationHistogram of the number of neighbors for the genes in the main complexes of an N-responsive gene network in the elongation zone of P . trichocarpa. The histogram classifies the number of edges in the three complexes and revealed differences for the distribution of genes in complex 1 compared with complex 2 or complex 3.Back to article page