As in: “Some defects are associated with chromosomal abnormalities (for example, trisomy 13 and trisomy 18); some reflect exposure to teratogens such as retinoic acid at sensitive stages of development.”
Fahrbach, S. E. (2013). Developmental neuroscience: A concise introduction. Princeton, NJ: Princeton University Press, p. 73.
- For definitions of teratogen, see the Oxford English Dictionary and the Credo Reference Collection.
- To learn about teratogens, search for the term in MedlinePlus [http://www.nlm.nih.gov/medlineplus/]
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