A second group of new mother mice was given a regular diet for the same amount of time. (sciencedaily.com)
The pups grew more slowly than those in a control group containing mother mice that drank arsenic - free water. (newscientist.com)
Starting just before conception, Jirtle and Waterland fed a test group of mother mice a diet rich in methyl donors, small chemical clusters that can attach to a gene and turn it off. (discovermagazine.com)