The phylogenetic structure of all 37 samples were analyzed by unweighed principal coordinate analysis. As shown in Supplementary Figure S1, periodontitis and healthy subjects were well separated.

Creating a family tree that dates back more than 400 million years and details the evolution of the most diverse group of animals on the planet is no easy feat, but one ambitious group of ...

The resulting phylogenetic estimate offers novel insights into the rapid radiation of modern birds and provides a taxon-rich backbone tree for future comparative studies.” By updating the family ...