Sentences with phrase «pregnancies in aged mice»
By examining first pregnancies in aged mice, the team showed that, for mice as for humans, the risk of complications increases with age.
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In one group of mice, he and his colleagues dosed their mothers with a synthetic compound that simulates a mild viral infection during late pregnancy; when their offspring hit early puberty at about 6 weeks of age, the young mice were exposed to unpredictable stress, such as being restrained, deprived of water, or given electric foot shocks.
B) Percentage of plugs and pregnancies in female B6CBAF1 mice as a result of mating with either IVC (n = 17) or control (n = 35) males at 9 mo of age.
Our mouse model data are not in conflict with the epidemiological observation that a first pregnancy before age 22 greatly reduces breast cancer risk (MacMahon et al., 1970), because at this young age, the chance of having already accumulated precancerous cells is small.