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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 ?
"Since opening Downcast Studios in 2008, I have been blown away by the support I have received from amazing local bands, and this is a great way to thank them for their loyalty by providing them with an opportunity to showcase their talents to people of the North East and in such a prestigious venue."
I wouldn't say I've leapfrogged him because we are team-mates and our main concern is taking wickets for Durham." Onions refusing to be too downcast And, having broken into the England side this season, Onions insisted he is comfortable with the pressure that comes with trying to establish yourself as an international player.
The flat surface and bold colors seem to suggest a scene of intense emotion, but the dark figures in the foreground, their heads bowed and eyes downcast, are unapproachable.
His downcast expression--of effort and innocence--made this motion seem like a small mountain on this journey.
Looking pale and downcast, Heffernan told the senate, "I want to extend to Michael Kirby my sincere apology and deep regret for the allegations I made in this place.
It has sufficient refrigeration capacity to produce 6,300 t/d of ice and cools air that is downcast in R67 shaft into the Enterprise mine.
And Mother Teresa's Missionaries of Charity, with six Canadian houses, minister to the downcast, the throw-aways, the marginalized, with gratitude to God for his mercy.
Many women tend to tilt their heads, toss or play with their hair, and/or hold their chins down with eyes downcast or glancing upward, conveying that "scared-doe" look.
The strange fantasy-image of a bent, downcast, lost old man in a hat or hood becomes an all-too-familiar reality, but one recognized only much belatedly.
Despite these seemingly downcast events, Dean Shapiro, executive director of Insignia/ESG's Westchester-Connecticut office, insists that "The addition of the high quality space in Greenwich and Norwalk is really a healthy development for these markets.