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.
Ballou CE, et al. Developmental defects associated with glucosamine auxotrophy in Saccharomyces cerevisiae. Proc. Natl. Acad. Sci. USA 74: 4351-4355, 1977.