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.
Ehrlich J, et al. Hygromycin and method of producing same. US Patent 3,100,176 dated Aug 6 1953
Shirling EB, Gottlieb D. Cooperative description of type strains of Streptomyces. V. Additional descriptions. Int J Syst Bacteriol 22: 265-394, 1972.
