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.
Brian, PW et al. A substance causing abnormal development of fungal hyphae produced by Penicillium janczewskii Zal. I. Biological assay, production, and isolation of "curling factor.". Trans. Br. Mycol. Soc. 29: 173-187, 1946.
