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. 2013 Jan 22;3:445. doi: 10.3389/fmicb.2012.00445

FIGURE 4.

FIGURE 4

Distribution of betaproteobacterial amoA clones (A) and archaeal amoA clones (B) related to fertilization rates. Groups are based on phylogenetic clusters designated in Figures 3 and 5. The number of sequences used to generate data points for each fertilization rate are shown in boxes.