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.
Kandler O, Hippe H. Lack of peptidoglycan in the cell walls of Methanosarcina barkeri. Arch. Microbiol. 113: 57-60, 1977. PubMed: 889387
