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John Langdon H., English physician, 1828-1896. See: Down syndrome.
Farlex Partner Medical Dictionary © Farlex 2012


1. Fine, soft, fluffy feathers forming the first plumage of a young bird and underlying the contour feathers in certain adult birds.
2. A soft, silky, or feathery substance, such as the first growth of a human beard.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


the soft, small feathers lacking BARBULES that cover the body of a bird and aid heat retention.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Patient discussion about down

Q. Can Down syndrome occur again? A few years ago, at the age of 32 my sister gave birth to a child that was diagnosed with Down syndrome. Now, at the age of 37 she's pregnant again. Can she have another baby with Down? Does the fact she has a baby with Down means she has higher risk for a second baby with Down?

A. - Older women especially after 35 years
- Previuosly child with Down Syndrome

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Q. assessment of down syndrom

A. down syndrome is a very easy diagnosis - it just need a chromosome check and seeing 3 (instead 2) chromosomes number 21. -

Q. what does enlarged heart mean? is it linked to down syndrome? My wife is 16 weeks pregnant. we did a prenatal US and we were told that the baby hes an enlarged heart and that we are advised to do amniocentesis. A friend of mine had a baby with down syndrome, and he was toled that if they have done this procedure, the doctors could have find it on time and abort the pregnancy. Is there a clear connection between the enlarged hart and the fact that the doctor advised us to do this procedure to down syndrome?

A. Down syndrome is associated with several kinds of heart problems. those problems can cause an enlarged heart but usually it will appears as a post-natal complication.
The protocol that most obstetrics use is that if there is anything abnormal in the US there is an automatic referral to an amniocentesis procedure.
the US has a lot of false alarms, so they must check with the more accurate procedure.

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References in periodicals archive ?
I just want to kick on now and become successful.'' To find out more about Jack and downhill racing see
Jordan Syme has combined his interest in engineering with his enthusiasm for mountain biking by coming up with a revolutionary design for a downhill racing bike which is now in the last ten of a nationwide competition in mountain bikers' MBUK magazine.
"I want to concentrate on downhill racing for at least one year - maybe more depending on how it goes, perhaps delay university even further."
He's enthusiastic about all types of skiing from carving on piste, off-piste, slalom, downhill racing and bumps to touring, and has worked in the Alps for a good while now with several companies.
The former model, who lost her left leg in a road accident in 1993, has been in training for several months as she struggles to learn downhill racing.
Participants must display their skill in downhill racing and the slalom, before gunning down an elk and designing a jacket that will resurrect the fortunes of clothing giants C & A.
He said: "I've always taken part in two-wheel sports such as BMX and motocross, so downhill racing is really in my blood.