Teratogenicity refers to the capability of a substance to cause malformations or developmental abnormalities in a developing fetus when exposure occurs during pregnancy. This term highlights the critical need for assessing the safety of drugs, chemicals, and other agents that might be encountered by pregnant individuals, as the consequences can be severe and lifelong for the offspring. Understanding teratogenicity is crucial in toxicity testing, as it informs regulatory decisions and risk assessments regarding prenatal exposure to potentially harmful substances.
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