Donovan, P., Smith, G., Dove, L., Klose, J., & Powell, D. (2006). HGPRT mutation induction by N-ethyl-N-nitrosourea as measured by 6-thioguanine resistance is higher in male than in female Syrian hamster fetuses. Birth Defects Research. Part B, Developmental and Reproductive Toxicology, 77(5), 399-404. https://doi.org/10.1002/bdrb.20088