Examlex
Radioactive isotopes and nonradioactive isotopes of an element react essentially identically.
Pregnancy Complications
Health problems that occur during pregnancy, which can involve the mother's health, the baby's health, or both.
Neural Tube
The embryonic precursor to the central nervous system, consisting of a tube that eventually forms the brain and spinal cord.
Spina Bifida
A birth defect where there is incomplete closing of the backbone and membranes around the spinal cord.
Anencephaly
A severe congenital condition characterized by the absence of a major portion of the brain, skull, and scalp.
Q6: The isotope that is used for the
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Q74: The element whose atoms have a unique
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Q154: Amines are acidic compounds.
Q185: This substance used as an analgesic was