Bacteria that do not breathe oxygen are called anaerobes. This particular microbe was found a mile beneathe the surface in Virginia. It was isolated by Dave Boone and others who discovered it in an NSF sponsored deep drilling project. Int. J. Syst. Bacteria are also called prokaryotes or monerans.
Most bacteria are unicellular, containing only a single cell.
Sometimes bacteria appear multicellular, living together in groups of cells. Bacteria comprise two of the three domains of life, the Eubacteria and the Archaea. This work was created with support from the National Science Foundation and the Center for Microbial Ecology at Michigan State University. Current maintenance is supported by the International Society for Microbial Ecology and the Comm Tech Lab .