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(a) Histogram showing the different types of archaeal fosmids found in our libraries according to the taxonomic affiliation of their two fosmid-end sequences. Arch: archaea of uncertain taxonomy; Bact: bacteria; Cren: Crenarchaeota; Eury: Euryarchaeota; Thaum: Thaumarchaeota. (b) Taxonomic ascription of the bacterial donors involved in HGT events detected by phylogenetic analysis of fosmid-end sequences.
