Figure 1
The mRNA abundance versus incoming degrees of connectivity in E. coli. The relative mRNA abundances (on an arbitrary scale) as given by microarray experiments are averaged according to the incoming degree of the corresponding genes, that is the number of transcription factors regulating the given genes, and plotted against that degree. Only the genes that have an incoming degree greater than 0 have been selected, that is 787 genes. The error bars give the standard deviation.