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Cartoon of parabasalid evolutionary relationships.Phylogeny of key parasitic, commensal and free-living parabasalid species based on the protein sequence of the largest subunit of RNA polymerase II (Rbp1). The cartoon represents four of the six resolved groups, the Trichomonadea, Tritrichomonadea, Hypotrichomonidea and Trichonmypha. Adapted from Ref [75].
