Mapped reads to the most abundant species identified.

Normalized data points are separated into two y-axes, mainly one for the M. hyopneumoniae species and the other one for the rest of the species. In the x-axis, the most abundant species are shown. The y-axis shows the relative frequency in two scales; left: in green (M01) and purple (M02) the relative frequency scales for M. hyopneumoniae; right in red (M01) and blue (M02), the relative frequency scale for the remaining species.