down syndrome
"The formal story began in 1866, when a physician named John Langdon Down published an essay in England in which he described a set of children with common features who were distinct from other children with mental retardation." Down was superintendent of an asylum for children with mental retardation in Surrey, England when he made the first distinction between children who were cretins (later to be found to have hypothyroidism) and what he referred to as "Mongoloids." "In the 1970s, an American revision of scientific terms changed it simply to "Down syndrome."Chromosomes are thread-like structures composed of DNA and other proteins. "A person with down syndrome are short in stature and have a small, round head with a high, flattened forehead and fissured, dry lips and tongue." They are present in every cell of the body and carry the genetic information needed for that cell to develop. "Genes, which are units of information, are "encod
http://www3.ncbi.nlm.nih.gov/htbin-post/Omim/dispmim?190685#DESCRIPTION Down Syndrome has many effects on children. It can be fatal and cannot be fatal. "The life expectancy is about fourteen years. There is no cure for Down syndrome. However, prenatal tests are available to identify fetuses with the disorder. The American College of Obstetricians and Gynecologists recommends that the so-called triple-screen blood test be offered to all pregnant women. This test measures the levels of three chemicals in the blood of the pregnant woman to indicate the baby's risk of Down syndrome. If the risk is high, amniocentesis, a procedure for removing a sample of the amniotic fluid surrounding the fetus, is administered to confirm the findings from the blood tests. Fetal cells are present in their fluid and can be checked for the presence of the chromosomal disorder." ed" in the DNA." Human cells normally have 46 chromosomes which can be arranged
Some common words found in the essay are:
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Approximate Word count = 635
Approximate Pages = 3 (250 words per page double spaced)
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