pollen


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pollen

 [pol´en]
the male fertilizing element of flowering plants.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pol·len

(pol'ĕn),
Microspores of seed plants carried by wind or insects before fertilization; important in the etiology of hay fever and other allergies.
[L. fine dust, fine flour]
Farlex Partner Medical Dictionary © Farlex 2012

pollen

The male gametophyte of flowering plants which, once airborne, becomes a major cause of seasonal allergies.

Major allergents
Ragweed and others (e.g., feverfew).
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

pollen

The male gametophyte of flowering plants, a major cause of seasonal allergies; ragweed–and related henchmen–eg, feverfew, has garnered the greatest revulsion among the allergically challenged
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

pol·len

(pol'ĕn)
Microspores of seed plants carried by wind or insects prior to fertilization; important in the etiology of hay fever and other allergies.
[L. fine dust, fine flour]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

pollen

see POLLEN GRAIN.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

pol·len

(pol'ĕn)
Microspores of seed plants carried by wind or insects prior to fertilization; important in the etiology of hay fever and other allergies.
[L. fine dust, fine flour]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
She added: "This year we've seen a rather stumbling start to it, the rain has dampened down the grass and prevented it from emitting pollen." Dr Adams-Groom said the main grass pollen season can affect up to 95 per cent of hay fever sufferers, adding that conditions were not out of the ordinary.
He said the people should wear sunglasses and a hat as it would help keep pollen out of their eyes and off their hair.
It added that out of all these plants paper mulberry shares about 97% of the total pollen and its concentration touches the extreme limits of about 40,000 per cubic meter of air at the peak of the blossom season.
Current pollen counts and forecasts assess the whole load of pollen in the air, and while scientists can distinguish between the pollen from individual tree and weed species, it has proved virtually impossible for the current forecast methods to visually identify different grass pollens.
However, areas close to large amounts of trees are more likely to have a higher pollen count, as it is currently tree pollen season.
'The main reason for the low pollen count this year is regular rainfall and cloudy weather conditions,' a Met Office staffer said.
Use re-circulated air in the car when pollen levels are high and use your prescribed medications before going outdoors when pollen cannot be avoided, and keep your asthma reliever with you.
Pollen accumulates indoors too, so dust with a damp cloth and vacuum regularly.
The Met Office said the pollen season separated into three main sections with tree pollen predominant between late March to mid-May; grass pollen from mid-May to July and weed pollen from the end of this month to September.
The pollen season separates into three main sections, tree pollen from late March to mid-May, grass pollen from May to July and weed pollen from the end of June to September.
The most common symptoms are usually caused when our bodies, in contact with the outside, produce allergic antibodies to proteins in tree and grass pollen. When pollen is inhaled, the proteins cause the antibodies to burst and release histamine.
There are three distinct peaks in pollen production during the year: tree pollen peaks in spring, grass pollen spikes in the summer and ragweed pollen surges in fall.