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Fig. 7 | BMC Genomics

Fig. 7

From: Phylogenetic analysis of human Chlamydia pneumoniae strains reveals a distinct Australian indigenous clade that predates European exploration of the continent

Fig. 7

Evolutionary hypothesis model describing two alternate hypotheses for the characteristic deep-branching of the Australian indigenous strains SH511 and 1979. In hypothesis A, Australian indigenous strains evolved from a separate zoonotic (or intermediate) transmission event, and continued to evolve in isolation from non-indigenous human C. pneumoniae strains. In hypothesis B, all human C. pneumoniae strains disseminated from a single zoonotic (or intermediate) transmission event and evolved separately in response to differing ecological functions

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