Molecular biology has provided new insights into the genetics, physiology, and evolutionary biology of this intimate association
This content is only available as a PDF.

Author notes

Paul Baumann is a professor in the Microbiology Section, University of California, Davis, CA 95616-8665.
Nancy A. Moran is a professor in the Department of Ecology and Evolutionary Riology, University of Arizona, Tucson, AZ 85721
Linda Baumann is a research associate in the Microbiology Section, University of California, Davis, CA 95616-8665.