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.
Goldfield M. J. Infect. Dis. 136: 347-355, 1977.
Kendal AP, et al. Swine influenza viruses isolated in 1976 from man and pig contain two coexisting subpopulations with antigenically distinguishable hemagglutinins. Virology 82: 111-121, 1977. PubMed: 70881
