A structure in a cell nucleus that consists of genes. In humans, 23 pairs of chromosomes, each pair containing one chromosome from each parent, carry the entire genetic code.
A disorder caused by the presence of an extra chromosome 21 and characterized by mental retardation and distinguishing physical features.
Expulsion or extraction of the fetus from the womb before it is viable, usually before the 20th week of gestation.
structure in early fetal life that develops into the brain, spinal cord, spinal nerves and spine.
In the spinal column through which the spinal cord may protrude.
Energy carried by waves or by streams of particles. Various forms of radiation can be used in low doses to diagnose disease and in high doses to treat disease
Drugs used to treat cancer.
Having to do with metabolism.
The fluid which, contained in the sac of membranes known as the amnion, surrounds the fetus and provides a shock absorber and a secondary vehicle for the exchange of body chemicals with the mother.
Term for an unborn baby from the end of the 8th week after conception until birth
Alfa Feto Protein:
A protein produced by fetal tissues and some types of cancers in adults. Usually undetectable in the blood of healthy nonpregnant adults.