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.
Barclay BJ, Little JG. Genetic damage during thymidylate starvation in Saccharomyces cerevisiae. Mol. Gen. Genet. 160: 33-40, 1978. PubMed: 347246
