Table 1.

Archaeal and bacterial species analyzed. The six bacterial species listed below served as negative (non-archaeal) controls for the study.

Domain	Kingdom	Phylum	Order	Family	Species
Archaea	Crenarchaeota			Desulfurococcaceae	Aeropyrum pernix
	Euryarchaeota			Archaeoglobaceae	Archaeoglobus fulgidus
				Methanococcaceae	Methanococcus jannaschii
				Methanobacteriaceae	Methanothermobacter thermoautotrophicus
				Thermoplasmataceae	Thermoplasma volcanium
				Thermococcaceae	Pyrococcus abyssi
					Pyrococcus horikoshii
Bacteria		Proteobacteria		Enterobacteriaceae	Escherichia coli
				Pasteurellaceae	Haemophilus influenzae
		Cyanobacteria	Chroococcales		Synechocystis trididemni
		Firmicutes		Bacillaceae	Bacillus subtilis
				Mycoplasmataceae	Mycoplasma genitalium
					Mycoplasma pneumoniae