:*Cospeciation between bacterial endosymbionts. <ref>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=10937228</ref>
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:*Cospeciation between bacterial endosymbionts.<ref>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=10937228</ref>
:*Cospeciation, and Host Switching in Avian Malaria Parasites. <ref>http://striweb.si.edu/publications/PDFs/Bermingham,%20Avian%20malaria%20SysBio04.pdf</ref>
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:*Cospeciation, and Host Switching in Avian Malaria Parasites.<ref>http://striweb.si.edu/publications/PDFs/Bermingham,%20Avian%20malaria%20SysBio04.pdf</ref>