Fig. 1

ML phylogenetic trees of the Pediculus humanus endosymbiont housekeeping genes, distributed in six divergent clades. a ML tree of a 454-bp fragment of the ftsZ gene, b ML tree of a 631-bp fragment of the groEL gene, c, d ML tree of the 677- and 466-bp fragments of the rpoB gene (rpoB-1 and rpoB-2, respectively). Phylogenetic inference was conducted in MEGA 7 using the ML method under the Kimura 2-parameter with 1000 bootstrap replicates. Abbreviations: ML, Maximum likelihood