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Maximum likelihood trees for GroESL and Ibp proteins. (A) GroESL. Outgroup sequences: Hi, H. Influenzae; Ye, Y. enterocolitica; and Ec, E. coli. (B) Ibp. Outgroup sequences: Ec-IbpA and B, E. coli IbpA and IbpB. Figures near branches indicate support values greater than 50% obtained in quartet puzzling. Species abbreviations are given in the legend to Fig. 1.
