Biosafety classification is based on U.S. Public Health Service Guidelines, it is the responsibility of the customer to ensure that their facilities comply with biosafety regulations for their own country.
Keswani J, et al. Phylogeny and Taxonomy of Mesophilic Methanococcus spp. and Comparison or rRNA, DNA Hybridization, and Phenotypic Methods.. Int. J. Syst. Bacteriol. 46: 727-735, 1996.