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.
Hill F, et al. Steroid production. US Patent 4,320,195 dated Mar 16 1982
Hill FF, et al. Transformation of sterols by fermentation. US Patent 4,451,564 dated May 29 1984
