Down's syndrome test

Down's syndrome test

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Credit: BSIP, LAURENT H.AMERICAIN/SCIENCE PHOTO LIBRARY

Caption: Down's syndrome test. Amniotic fluid containing amniotic cells being poured into a test tube during a test for Down's syndrome (trisomy-21). The amniotic fluid, which surrounds the developing foetus, was removed using a syringe in a procedure called amniocentesis. Amniocentesis is usually performed between the 16th and 18th week of pregnancy. The foetal cells in the fluid are then cultured for up to 4 weeks before chromosomal analysis takes place. In Down's syndrome, there are three rather than two copies of chromosome 21. This results in mental handicap and flattened facial features.

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Keywords: amniocentesis test, amniotic cells, biochemistry, biotechnology, culture, cultured, disease, dna research, down's syndrome, downs, fetus, foetal, foetus, genetic, genetics, healthcare, illness, laboratory, liquid fuel burner, medical, medicine, pregnancy, prenatal, sample bottle, screening, test tube, testing, trisomy-21

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