Results 271 to 280 of about 199,462 (316)
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Allergenic Pollen and Pollen Allergy in Europe
2017Aerobiological and allergological studies show that the pollen map of Europe is changing also as a result of cultural factors (e.g., importation of plants such as birch and cypress for urban parklands), greater international travel (e.g., colonization by ragweed in France, northern Italy, Austria, Hungary, etc.) and climate change.
D'amato G. +5 more
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POLLEN PREVALENCE AND POLLEN-FREE AREAS
Journal of the American Medical Association, 1952The essential objective in atmospheric pollen research is to learn how much of what kinds of allergenic pollen are likely to be inhaled by sensitized persons at any time and in any locality. This objective may be amplified in further detail as follows: (1) to assist in the clinical evaluation, locally and generally, of known allergenic pollens, (2) to ...
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2014
Pollen grains only represent a small fraction of the total amount of the viable biological particles present in the air, but pollen are the most important aeroallergens in the outdoor environment. The analysis of pollen has traditionally been carried out by microscopy, which can be traced back to the 17th century.
Matt Smith +3 more
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Pollen grains only represent a small fraction of the total amount of the viable biological particles present in the air, but pollen are the most important aeroallergens in the outdoor environment. The analysis of pollen has traditionally been carried out by microscopy, which can be traced back to the 17th century.
Matt Smith +3 more
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Nature Reviews Microbiology, 2021
This study shows that co-existence of the four Lactobacillus species in the gut of the honey bee is mainly dependent on the pollen-rich diet of the host, and mediated by the specialization of the gut symbionts towards distinct pollen-derived nutrients.
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This study shows that co-existence of the four Lactobacillus species in the gut of the honey bee is mainly dependent on the pollen-rich diet of the host, and mediated by the specialization of the gut symbionts towards distinct pollen-derived nutrients.
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Cryopreservation of Pollen and Pollen Embryos, and the Establishment of Pollen Banks
1987Publisher Summary The cryopreservation of pollen plays an important role in hybridization programs and in the conservation of genetic resources in agricultural and forest biotechnology. In addition to the several potentials outlined, the most important aspect is the storage of “recalcitrant” pollen of important fruit and forest trees and agricultural
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Reevaluation of pollen quantitation by an automatic pollen counter
Allergy and Asthma Proceedings, 2010Accurate and detailed pollen monitoring is useful for selection of medication and for allergen avoidance in patients with allergic rhinitis. Burkard and Durham pollen samplers are commonly used, but are labor and time intensive. In contrast, automatic pollen counters allow simple real-time pollen counting; however, these instruments have difficulty in ...
Mutarifu, Muradil +9 more
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Annals of Allergy, Asthma & Immunology, 1998
The purpose of this review is to introduce the reader to a systematic approach to categorizing pollen types. This will enable the reader to recognize pollen characteristics of the most common botanical sources and determine the relevant contributors to the local aeroallergen burden.Allergenic plant and pollen atlases for pollen characteristics, allergy
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The purpose of this review is to introduce the reader to a systematic approach to categorizing pollen types. This will enable the reader to recognize pollen characteristics of the most common botanical sources and determine the relevant contributors to the local aeroallergen burden.Allergenic plant and pollen atlases for pollen characteristics, allergy
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Pollen and Pollen Tube Proteomics
2007Germinated pollen grains form pollen tubes that accomplish rapid polar- ized growth within female gametophytic tissues in order to deliver the sperm cell to the ovule. This process is essential for successful plant fertilization in vivo. Pollen tubes are considered to be an ideal model system to study tip growth. A more com- prehensive understanding of
Tong Chen +5 more
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Nursing Standard, 1988
A highly specific test for sensitivity to pollen could soon be developed.
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A highly specific test for sensitivity to pollen could soon be developed.
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Actin in Pollen and Pollen Tubes
2000Flowering plants rely on the highly polarized process of pollen tube growth for delivery of the sperm cells and thus for sexual reproduction. Although it has long been known that the actin cytoskeleton is necessary for pollen grain germination and tube growth, the precise structure of the actin arrays and their regulation by actin-associated proteins ...
Luis Vidali, Peter K. Hepler
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