A teratogenic sensitive period is the time when

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A teratogenic sensitive period is the time during prenatal development when a body part or organ is most vulnerable to teratogenic injury, meaning that exposure to certain environmental factors, such as drugs, chemicals, or infections, can interfere with the normal development and cause abnormalities or malformations in the fetus. Different organs have different vulnerability windows, which can overlap or be sequential. For example, the neural tube is most sensitive to folic acid deficiency or excess during the first 28 days of gestation, while the limbs are most sensitive to thalidomide during days 24-36, and the heart is most vulnerable to rubella during weeks 8-10. It is important for pregnant women to be aware of these critical periods and avoid risky behaviors or exposures that could harm the developing baby.

A Teratogenic Sensitive Period Is the Time When