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Venn diagram summarizing the comparison of 24-h post-N step-down to steady-state diazotrophic growth. Genes that were significantly up- or downregulated as determined by B values of ≥0 at 24 h and steady state (SS) were compared. The four plot insets depict the general patterns of change in expression for each set of genes indicated. For example, there are 75 genes downregulated at SS that show no change at 24 h.
