A research team led by UC Berkeley scientists has defined a new branch on the tree of life after sequencing about 800 largely unknown bacteria genomes. The researchers classified these very small ...

For the first time, scientists have defined the bacteria that inhabit multiple sites along the healthy human digestive tract in a large number of individuals. As part of the Human Microbiome Project, ...

Approaches to describe the tree of life have been based on the physical characteristics and metabolic features of distinguished organisms. The advent of molecular methods has widened the diversity of ...