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.
Hartley JW, Rowe WP. Clonal cells lines from a feral mouse embryo which lack host-range restrictions for murine leukemia viruses. Virology 65: 128-134, 1975. PubMed: 167514
