RT Journal A1 Hampton T T1 NEw male contraceptive? JF JAMA JO JAMA YR 2012 FD July 4 VO 308 IS 1 SP 21 OP 21 DO 10.1001/jama.2012.6949 UL http://dx.doi.org/10.1001/jama.2012.6949 AB To identify new genes involved in male fertility, a team led by researchers at the University of Edinburgh, in Scotland, chemically induced random mutations within the DNA of mice and then screened for animals that exhibited infertility. These experiments indicated that the Katnal1 gene is critical to enable sperm to mature in the testes.