Alcohol.
Alcohol
in the first trimester
A teratogen is an environmental factor that causes birth defects during prenatal development. An example of a teratogen is ionizing radiation.
during the first three months of pregnancy
No.
Teratogen is a substance that causes malformations for a foetus, when it's developing. Examples of teratogenes are alcohol, drugs, led etc.
A teratogen is an agent or factor that causes malformation of an embryo. It would be likely to result in a spontaneous abortion, another name for a miscarriage or loss of the unborn child.
A teratogen is any environmental agent capable of causing a birth defect. It is thought teratogens cause the most serious damage at about 10-14 days after conception. However, any embryotic system is vulnerable, especially during the time it is forming and developing.
teratogen
Thalidomide.
teratogen
teratogen
Teratogen