A research team finds that an experimental drug causes problems for prenatal development,but only if it is given within the first 20 days of pregnancy.Researchers are worried that this will most likely affect

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The drug is causing problems for prenatal development, but only when given within the first 20 days of pregnancy, which is a critical time for the development of the heart. Therefore, it is likely that the experimental drug is affecting the development of the heart, rather than other factors such as the blastocyst, length of gestation, or birth weight.

A Research Team Finds That an Experimental Drug Causes Problems