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.
Beckwith JR, Strauch KL. Periplasmic protease mutants of Escherichia coli. US Patent 4,946,783 dated Aug 7 1990
Strauch KL, Beckwith J. An Escherichia coli mutation preventing degradation of abnormal periplasmic proteins. Proc. Natl. Acad. Sci. USA 85: 1576-1580, 1988. PubMed: 3278319
