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.
Melton DW, et al. Structure, expression, and mutation of the hypoxanthine phosphoribosyltransferase gene. Proc. Natl. Acad. Sci. USA 81: 2147-2151, 1984. PubMed: 6326107
C. Thomas Caskey, personal communication
