Additional file 8.
Figure S7. Phylogeny of iPLA2 and related bacterial similar sequences. The tree was constructed by using MrBayes 3.1.2, and is illustrated using the same conventions as Figure 1. The rejection of monophyly hypothesis of Animalia (Animalia1+Animalia2) by AU test (0.048) argues that iPLA2 beta and gamma diverged in the ancestor of Animalia though it's hard to determine the time.
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Tian et al. BMC Evolutionary Biology 2012 12:32 doi:10.1186/1471-2148-12-32