First trimester: In early pregnancy when the embryo is transforming itself into the fetus with all the complex systems and organs is the most dangerous time for exposure to teratogens.
Answered 11/7/2014
3.6k views
First trimester: when all of the organ systems are forming is the most dangerous, but they should be avoided all during pregnancy,
Answered 1/13/2015
3.6k views
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A doctor has provided 1 answer
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