Comparison of expression for all of the A. fundyense signatures. The expression ratios compare the abundance of each signature between the two libraries. Bars indicate the number of signatures with an expression ratio within the stated range. Expression ratios were calculated to be ≥1, so that signatures that are more highly expressed in the P/40 library are to the left (P:N) whereas those with greater expression in the N/40 library are to the right (N:P). The exceptions are signatures with ratio = 1, these are repeated on the two sides of the figure, and those with ratio = 0.