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.
Middlehoven WJ, et al. Excessive production of ammonium from nitrate by some methanol-assimilating yeast strains. Eur. J. Appl. Microbiol. 2: 169-173, 1976.
