Figure 1From: Apparent dependence of protein evolutionary rate on number of interactions is linked to biases in protein–protein interactions data sets(A) shows the relationship between evolutionary rate and expression level as measured by gene microarrays [21]. (B) shows the relationship between expression level and the total number of interactions from all studies. (C) shows the relationship between evolutionary rate and the total number of interactions from all studies. Some outlying data points are not shown, but are included in the calculations of the correlations in Table 1.Back to article page