Some scientists have a hunch that a pregnant woman's diet and her exposure to various chemicals turn on some fetal genes and turn off others.
有些科学家有预感，认为孕妇的饮食和她接触的各种化学物质会开启一些胎儿基因，而关闭其他基因。
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Crouched in the fetal position is the most popular sleep pattern and favored by 51 percent of women, according to the results of the study he conducted for a large hotel group.
Finally, the experiment presents the possibility that such neurons could be used in experimental treatments that currently use fetal brain cells, sidestepping an uncomfortable ethical issue.