Phylogenetic tree highlighting the position of Megasphaera massiliensis strain NP3T relative to other type strains within the genus Megasphaera and other members of the family Veillonellaceae. GenBank accession numbers are indicated in parentheses. Sequences were aligned using CLUSTALW, and phylogenetic inferences obtained using the maximum-likelihood method within the MEGA software. Numbers at the nodes are percentages of bootstrap values obtained by repeating the analysis 500 times to generate a majority consensus tree. Dialister pneumosintes was used as outgroup. The scale bar indicates a 1% nucleotide sequence divergence.