Figure 2.

Histogram of 22 msp2 loci and percentage of total RNA transcripts detected at low and high passage for A. phagocytophilum. Frequency of msp2 transcript detection in low passage (7 passages in vitro, represented by shaded bars) [15] and high passage (20 passages in vitro, represented by open bars) A. phagocytophilum Webster strain for each of 22 distinct loci detected.