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  1. Article: Allergy symptoms in relation to alder and birch pollen concentrations in Finland

    Jantunen, Juha / Saarinen, Kimmo / Rantio-Lehtimäki, Auli

    Aerobiologia. 2012 June, v. 28, no. 2

    2012  

    Abstract: In order to study allergic people responding to daily changes in pollen concentrations, we compared personal diary data on allergic symptoms and the use of allergy medicines to daily pollen counts during the two unequal alder and birch pollen seasons of ... ...

    Abstract In order to study allergic people responding to daily changes in pollen concentrations, we compared personal diary data on allergic symptoms and the use of allergy medicines to daily pollen counts during the two unequal alder and birch pollen seasons of 2009 and 2010. Almost 90% of the 61 subjects with physician-diagnosed birch pollinosis developed conjunctival, nasal or other symptoms during the peak birch pollination. Most subjects (95%) also reported symptoms during the alder pollination. Despite a delay between the most severe symptoms and the pollen peaks and the increased risk of allergy symptoms between the alder and birch pollen peaks at much lower pollen concentrations, the number of subjects with allergy symptoms correlated with the daily pollen concentrations in both years (r 09 = 0.35, r 10 = 0.36, p < 0.01). The positive correlation was even stronger (r 09 = 0.69, r 10 = 0.74, p < 0.001) in relation to the cumulative sum of daily concentrations. The use of allergy medicines precisely followed the abundance of allergy symptoms in both years (r 09 = 0.96, r 10 = 0.70, p < 0.001). We conclude that there is a fair correlation between the daily allergy symptoms and the particular pollen concentrations, but the risk of developing symptoms at low, moderate and high concentrations is affected by the progression of the pollen season.
    Keywords Betula ; hay fever ; nose ; people ; pollen ; pollination ; risk ; Finland
    Language English
    Dates of publication 2012-06
    Size p. 169-176.
    Publishing place Springer-Verlag
    Document type Article
    ZDB-ID 1499126-3
    ISSN 1573-3025 ; 0393-5965
    ISSN (online) 1573-3025
    ISSN 0393-5965
    DOI 10.1007/s10453-011-9221-3
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Indoor and outdoor pollen concentrations in private and public spaces during the Betula pollen season

    Hugg, Timo / Rantio-Lehtimäki, Auli

    Aerobiologia. 2007 June, v. 23, no. 2

    2007  

    Abstract: Although the number of studies of pollen concentrations inside and outside buildings is increasing, little is known about the efficiency of penetration of pollen from outdoor to indoor air, and further. We studied indoor and outdoor pollen concentrations ...

    Abstract Although the number of studies of pollen concentrations inside and outside buildings is increasing, little is known about the efficiency of penetration of pollen from outdoor to indoor air, and further. We studied indoor and outdoor pollen concentrations in the town of Lappeenranta and in the municipality of Rautjärvi in SE Finland from May 3-23, 2004, i.e. throughout the Betula pollen season, and assessed the risk of exposure to pollen grains. Pollen concentrations were measured inside and outside a block of flats, a detached house, and the regional central hospital, using rotorod-type samplers; in the town of Joutseno data were compared with Burkard counts. Outdoor concentrations of Betula pollen grains ranged between low and abundant (0-855 grains m-³). The corresponding indoor concentrations near the main front doors varied from low to moderate (0-17 grains m-³) in the central hospital and were low (<10 grains m-³) in both residential buildings. Indoor concentrations further from the main front door were low (<10 grains m-³) at all study sites. The concentrations of Betula pollen decreased substantially from outdoors to indoors, and further toward the centre of the building, probably indicating relatively poor penetrating properties of the pollen grains and/or the short-lived presence of pollen grains in indoor air. The concentrations of Betula pollen inside the buildings during the peak flowering period were mostly at a level barely inducing reactions even in the most sensitive persons.
    Keywords Betula ; exposure
    Language English
    Dates of publication 2007-06
    Size p. 119-129.
    Publisher Kluwer Academic Publishers
    Publishing place Dordrecht
    Document type Article
    ZDB-ID 1499126-3
    ISSN 1573-3025 ; 0393-5965
    ISSN (online) 1573-3025
    ISSN 0393-5965
    DOI 10.1007/s10453-007-9057-z
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: Summer Spores of Birch Rust Fungus in Papanicolaou Smears from Healthy Mass Screening Participants

    Korhonen, Anna-Maija / Issakainen, Jouni / Ekfors, Tauno / Talve, Lauri / Rantio-Lehtimäki, Auli

    Acta Cytologica

    2011  Volume 45, Issue 5, Page(s) 679–682

    Institution From Pathology Laboratory of South-Western Finland Ltd., and Pathology Unit, Turku University Central Hospital, Turku, Finland
    Language English
    Publishing date 2011-04-12
    Publisher S. Karger AG
    Publishing place Basel, Switzerland
    Document type Article
    Note Original Articles
    ZDB-ID 80003-x
    ISSN 1938-2650 ; 0001-5547
    ISSN (online) 1938-2650
    ISSN 0001-5547
    DOI 10.1159/000328287
    Database Karger publisher's database

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  4. Article: A numerical model of birch pollen emission and dispersion in the atmosphere. Model evaluation and sensitivity analysis

    Siljamo, Pilvi / Sofiev, Mikhail / Filatova, Elena / Grewling, Łukasz / Jäger, Siegfried / Khoreva, Ekaterina / Linkosalo, Tapio / Ortega Jimenez, Sara / Ranta, Hanna / Rantio-Lehtimäki, Auli / Svetlov, Anton / Veriankaite, Laura / Yakovleva, Ekaterina / Kukkonen, Jaakko

    International journal of biometeorology. 2013 Jan., v. 57, no. 1

    2013  

    Abstract: An evaluation of performance of the System for Integrated modeLling of Atmospheric coMposition (SILAM) in application to birch pollen dispersion is presented. The system is described in a companion paper whereas the current study evaluates the model ... ...

    Abstract An evaluation of performance of the System for Integrated modeLling of Atmospheric coMposition (SILAM) in application to birch pollen dispersion is presented. The system is described in a companion paper whereas the current study evaluates the model sensitivity to details of the pollen emission module parameterisation and to the meteorological input data. The most important parameters are highlighted. The reference year considered for the analysis is 2006. It is shown that the model is capable of predicting about two-thirds of allergenic alerts, with the odds ratio exceeding 12 for the best setup. Several other statistics corroborate with these estimations. Low-pollen concentration days are also predicted correctly in more than two-thirds of cases. The model experiences certain difficulties only with intermediate pollen concentrations. It is demonstrated that the most important input parameter is the near-surface temperature, the bias of which can easily jeopardise the results. The model sensitivity to random fluctuations of temperature is much lower. Other parameters important at various stages of pollen development, release, and dispersion are precipitation and ambient humidity, as well as wind direction.
    Keywords Betula ; allergenicity ; atmosphere ; atmospheric chemistry ; humidity ; mathematical models ; odds ratio ; pollen ; prediction ; temperature ; wind direction
    Language English
    Dates of publication 2013-01
    Size p. 125-136.
    Publishing place Springer-Verlag
    Document type Article
    ZDB-ID 127361-9
    ISSN 0067-8902 ; 0020-7128
    ISSN 0067-8902 ; 0020-7128
    DOI 10.1007/s00484-012-0539-5
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: A numerical model of birch pollen emission and dispersion in the atmosphere. Model evaluation and sensitivity analysis.

    Siljamo, Pilvi / Sofiev, Mikhail / Filatova, Elena / Grewling, Łukasz / Jäger, Siegfried / Khoreva, Ekaterina / Linkosalo, Tapio / Ortega Jimenez, Sara / Ranta, Hanna / Rantio-Lehtimäki, Auli / Svetlov, Anton / Veriankaite, Laura / Yakovleva, Ekaterina / Kukkonen, Jaakko

    International journal of biometeorology

    2012  Volume 57, Issue 1, Page(s) 125–136

    Abstract: An evaluation of performance of the System for Integrated modeLling of Atmospheric coMposition (SILAM) in application to birch pollen dispersion is presented. The system is described in a companion paper whereas the current study evaluates the model ... ...

    Abstract An evaluation of performance of the System for Integrated modeLling of Atmospheric coMposition (SILAM) in application to birch pollen dispersion is presented. The system is described in a companion paper whereas the current study evaluates the model sensitivity to details of the pollen emission module parameterisation and to the meteorological input data. The most important parameters are highlighted. The reference year considered for the analysis is 2006. It is shown that the model is capable of predicting about two-thirds of allergenic alerts, with the odds ratio exceeding 12 for the best setup. Several other statistics corroborate with these estimations. Low-pollen concentration days are also predicted correctly in more than two-thirds of cases. The model experiences certain difficulties only with intermediate pollen concentrations. It is demonstrated that the most important input parameter is the near-surface temperature, the bias of which can easily jeopardise the results. The model sensitivity to random fluctuations of temperature is much lower. Other parameters important at various stages of pollen development, release, and dispersion are precipitation and ambient humidity, as well as wind direction.
    MeSH term(s) Atmosphere ; Betula ; Europe ; Flowers ; Models, Theoretical ; Pollen ; Weather
    Language English
    Publishing date 2012-03-22
    Publishing country United States
    Document type Evaluation Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 280324-0
    ISSN 1432-1254 ; 0020-7128
    ISSN (online) 1432-1254
    ISSN 0020-7128
    DOI 10.1007/s00484-012-0539-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Microbial growth inside insulated external walls as an indoor air biocontamination source.

    Pessi, Anna-Mari / Suonketo, Jommi / Pentti, Matti / Kurkilahti, Mika / Peltola, Kaija / Rantio-Lehtimäki, Auli

    Applied and environmental microbiology

    2001  Volume 68, Issue 2, Page(s) 963–967

    Abstract: The association between moisture-related microbial growth (mesophilic fungi and bacteria) within insulated exterior walls and microbial concentrations in the indoor air was studied. The studied apartment buildings with precast concrete external walls ... ...

    Abstract The association between moisture-related microbial growth (mesophilic fungi and bacteria) within insulated exterior walls and microbial concentrations in the indoor air was studied. The studied apartment buildings with precast concrete external walls were situated in a subarctic zone. Actinomycetes in the insulation layer were found to have increased concentrations in the indoor air. The moisture content of the indoor air significantly affected all measurable airborne concentrations.
    MeSH term(s) Actinomycetales/isolation & purification ; Air Microbiology ; Air Pollution, Indoor/adverse effects ; Bacteria/isolation & purification ; Cold Climate ; Colony Count, Microbial ; Construction Materials/microbiology ; Environmental Monitoring ; Fungi/isolation & purification ; Housing
    Language English
    Publishing date 2001-10-13
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 223011-2
    ISSN 1098-5336 ; 0099-2240
    ISSN (online) 1098-5336
    ISSN 0099-2240
    DOI 10.1128/AEM.68.2.963-967.2002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Variation of the group 5 grass pollen allergen content of airborne pollen in relation to geographic location and time in season.

    Buters, Jeroen / Prank, Marje / Sofiev, Mikhail / Pusch, Gudrun / Albertini, Roberto / Annesi-Maesano, Isabella / Antunes, Celia / Behrendt, Heidrun / Berger, Uwe / Brandao, Rui / Celenk, Sevcan / Galan, Carmen / Grewling, Łukasz / Jackowiak, Bogdan / Kennedy, Roy / Rantio-Lehtimäki, Auli / Reese, Gerald / Sauliene, Ingrida / Smith, Matt /
    Thibaudon, Michel / Weber, Bernhard / Cecchi, Lorenzo

    The Journal of allergy and clinical immunology

    2015  Volume 136, Issue 1, Page(s) 87–95.e6

    Abstract: Background: Allergies to grass pollen are the number one cause of outdoor hay fever. The human immune system reacts with symptoms to allergen from pollen.: Objective: We investigated the natural variability in release of the major group 5 allergen ... ...

    Abstract Background: Allergies to grass pollen are the number one cause of outdoor hay fever. The human immune system reacts with symptoms to allergen from pollen.
    Objective: We investigated the natural variability in release of the major group 5 allergen from grass pollen across Europe.
    Methods: Airborne pollen and allergens were simultaneously collected daily with a volumetric spore trap and a high-volume cascade impactor at 10 sites across Europe for 3 consecutive years. Group 5 allergen levels were determined with a Phl p 5-specific ELISA in 2 fractions of ambient air: particulate matter of greater than 10 μm in diameter and particulate matter greater than 2.5 μm and less than 10 μm in diameter. Mediator release by ambient air was determined in FcεRI-humanized basophils. The origin of pollen was modeled and condensed to pollen potency maps.
    Results: On average, grass pollen released 2.3 pg of Phl p 5 per pollen. Allergen release per pollen (potency) varied substantially, ranging from less than 1 to 9 pg of Phl p 5 per pollen (5% to 95% percentile). The main variation was locally day to day. Average potency maps across Europe varied between years. Mediator release from basophilic granulocytes correlated better with allergen levels per cubic meter (r(2) = 0.80, P < .001) than with pollen grains per cubic meter (r(2) = 0.61, P < .001). In addition, pollen released different amounts of allergen in the non-pollen-bearing fraction of ambient air, depending on humidity.
    Conclusion: Across Europe, the same amount of pollen released substantially different amounts of group 5 grass pollen allergen. This variation in allergen release is in addition to variations in pollen counts. Molecular aerobiology (ie, determining allergen in ambient air) might be a valuable addition to pollen counting.
    MeSH term(s) Air/analysis ; Basophils/physiology ; Cell Degranulation ; Europe ; Humans ; Humidity ; Particulate Matter/analysis ; Plant Proteins/analysis ; Poaceae/immunology ; Pollen/chemistry ; Receptors, IgE/genetics ; Receptors, IgE/metabolism ; Rhinitis, Allergic, Seasonal/epidemiology ; Rhinitis, Allergic, Seasonal/immunology ; Seasons
    Chemical Substances FcepsilonRI gamma-chain, human ; Particulate Matter ; Phl p V protein, Phleum pratense ; Plant Proteins ; Receptors, IgE
    Language English
    Publishing date 2015-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 121011-7
    ISSN 1097-6825 ; 1085-8725 ; 0091-6749
    ISSN (online) 1097-6825 ; 1085-8725
    ISSN 0091-6749
    DOI 10.1016/j.jaci.2015.01.049
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Influence of the North Atlantic Oscillation on grass pollen counts in Europe

    Smith, Matt / Emberlin, Jean / Stach, Alicja / Rantio-Lehtimäki, Auli / Caulton, Eric / Thibaudon, Michel / Sindt, Charlotte / Jäger, Siegfried / Gehrig, Regula / Frenguelli, Giuseppe / Jato, Victoria / Rajo, F. Javier Rodríguez / Alcázar, Purificación / Galán, Carmen

    Aerobiologia. 2009 Dec., v. 25, no. 4

    2009  

    Abstract: Relationships between temporal variations in the North Atlantic Oscillation (NAO) and grass pollen counts at 13 sites in Europe, ranging from Córdoba in the south-west and Turku in the north-east, were studied in order to determine spatial differences in ...

    Abstract Relationships between temporal variations in the North Atlantic Oscillation (NAO) and grass pollen counts at 13 sites in Europe, ranging from Córdoba in the south-west and Turku in the north-east, were studied in order to determine spatial differences in the amount of influence exerted by the NAO on the timing and magnitude of grass pollen seasons. There were a number of significant (P < 0.05) relationships between the NAO and start dates of the grass pollen season at the 13 pollen-monitoring sites. The strongest associations were generally recorded near to the Atlantic coast. Several significant correlations also existed between winter averages of the NAO and grass pollen season severity. Traditional methods for predicting the start or magnitude of grass pollen seasons have centred on the use of local meteorological observations, but this study has shown the importance of considering large-scale patterns of climate variability like the NAO.
    Keywords climate ; grasses ; meteorological data ; pollen ; prediction ; temporal variation ; Europe
    Language English
    Size p. 321-332.
    Publishing place Springer Netherlands
    Document type Article
    ZDB-ID 1499126-3
    ISSN 1573-3025 ; 0393-5965
    ISSN (online) 1573-3025
    ISSN 0393-5965
    DOI 10.1007/s10453-009-9136-4
    Database NAL-Catalogue (AGRICOLA)

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  9. Article: Release of Bet v 1 from birch pollen from 5 European countries. Results from the HIALINE study

    Buters, Jeroen T.M / Thibaudon, Michel / Smith, Matt / Kennedy, Roy / Rantio-Lehtimäki, Auli / Albertini, Roberto / Reese, Gerald / Weber, Bernhard / Galan, Carmen / Brandao, Rui / Antunes, Celia M / Jäger, Siegfried / Berger, Uwe / Celenk, Sevcan / Grewling, Łukasz / Jackowiak, Bogdan / Sauliene, Ingrida / Weichenmeier, Ingrid / Pusch, Gudrun /
    Sarioglu, Hakan / Ueffing, Marius / Behrendt, Heidrun / Prank, Marje / Sofiev, Mikhail / Cecchi, Lorenzo

    Atmospheric environment. 2012 Aug., v. 55

    2012  

    Abstract: Exposure to allergens is pivotal in determining sensitization and allergic symptoms in individuals. Pollen grain counts in ambient air have traditionally been assessed to estimate airborne allergen exposure. However, the exact allergen content of ambient ...

    Institution The HIALINE working group
    Abstract Exposure to allergens is pivotal in determining sensitization and allergic symptoms in individuals. Pollen grain counts in ambient air have traditionally been assessed to estimate airborne allergen exposure. However, the exact allergen content of ambient air is unknown. We therefore monitored atmospheric concentrations of birch pollen grains and the matched major birch pollen allergen Bet v 1 simultaneously across Europe within the EU-funded project HIALINE (Health Impacts of Airborne Allergen Information Network). Pollen count was assessed with Hirst type pollen traps at 10 l min⁻¹ at sites in France, United Kingdom, Germany, Italy and Finland. Allergen concentrations in ambient air were sampled at 800 l min⁻¹ with a Chemvol® high-volume cascade impactor equipped with stages PM > 10 μm, 10 μm > PM > 2.5 μm, and in Germany also 2.5 μm > PM > 0.12 μm. The major birch pollen allergen Bet v 1 was determined with an allergen specific ELISA. Bet v 1 isoform patterns were analyzed by 2D-SDS-PAGE blots and mass spectrometric identification. Basophil activation was tested in an FcɛR1-humanized rat basophil cell line passively sensitized with serum of a birch pollen symptomatic patient. Compared to 10 previous years, 2009 was a representative birch pollen season for all stations. About 90% of the allergen was found in the PM > 10 μm fraction at all stations. Bet v 1 isoforms pattern did not vary substantially neither during ripening of pollen nor between different geographical locations. The average European allergen release from birch pollen was 3.2 pg Bet v 1/pollen and did not vary much between the European countries. However, in all countries a >10-fold difference in daily allergen release per pollen was measured which could be explained by long-range transport of pollen with a deviating allergen release. Basophil activation by ambient air extracts correlated better with airborne allergen than with pollen concentration. Although Bet v 1 is a mixture of different isoforms, its fingerprint is constant across Europe. Bet v 1 was also exclusively linked to pollen. Pollen from different days varied >10-fold in allergen release. Thus exposure to allergen is inaccurately monitored by only monitoring birch pollen grains. Indeed, a humanized basophil activation test correlated much better with allergen concentrations in ambient air than with pollen count. Monitoring the allergens themselves together with pollen in ambient air might be an improvement in allergen exposure assessment.
    Keywords Betula ; air ; allergens ; atmospheric chemistry ; blood serum ; enzyme-linked immunosorbent assay ; exposure assessment ; mass spectrometry ; monitoring ; patients ; pollen ; rats ; ripening ; spore traps ; Finland ; France ; Germany ; Italy ; United Kingdom
    Language English
    Dates of publication 2012-08
    Size p. 496-505.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 216368-8
    ISSN 0004-6981 ; 1352-2310
    ISSN 0004-6981 ; 1352-2310
    DOI 10.1016/j.atmosenv.2012.01.054
    Database NAL-Catalogue (AGRICOLA)

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  10. Article: Release of Bet v 1 from birch pollen from 5 European countries. Results from the HIALINE study

    Buters, Jeroen T.M. / Thibaudon, Michel / Smith, Matt / Kennedy, Roy / Rantio-Lehtimäki, Auli / Albertini, Roberto / Reese, Gerald / Weber, Bernhard / Galan, Carmen / Brandao, Rui / Antunes, Celia M. / Jäger, Siegfried / Berger, Uwe / Celenk, Sevcan / Grewling, Łukasz / Jackowiak, Bogdan / Sauliene, Ingrida / Weichenmeier, Ingrid / Pusch, Gudrun /
    Sarioglu, Hakan / Ueffing, Marius / Behrendt, Heidrun / Prank, Marje / Sofiev, Mikhail / Cecchi, Lorenzo

    Atmospheric environment

    Volume v. 55

    Abstract: Exposure to allergens is pivotal in determining sensitization and allergic symptoms in individuals. Pollen grain counts in ambient air have traditionally been assessed to estimate airborne allergen exposure. However, the exact allergen content of ambient ...

    Abstract Exposure to allergens is pivotal in determining sensitization and allergic symptoms in individuals. Pollen grain counts in ambient air have traditionally been assessed to estimate airborne allergen exposure. However, the exact allergen content of ambient air is unknown. We therefore monitored atmospheric concentrations of birch pollen grains and the matched major birch pollen allergen Bet v 1 simultaneously across Europe within the EU-funded project HIALINE (Health Impacts of Airborne Allergen Information Network). Pollen count was assessed with Hirst type pollen traps at 10 l min⁻¹ at sites in France, United Kingdom, Germany, Italy and Finland. Allergen concentrations in ambient air were sampled at 800 l min⁻¹ with a Chemvol® high-volume cascade impactor equipped with stages PM > 10 μm, 10 μm > PM > 2.5 μm, and in Germany also 2.5 μm > PM > 0.12 μm. The major birch pollen allergen Bet v 1 was determined with an allergen specific ELISA. Bet v 1 isoform patterns were analyzed by 2D-SDS-PAGE blots and mass spectrometric identification. Basophil activation was tested in an FcɛR1-humanized rat basophil cell line passively sensitized with serum of a birch pollen symptomatic patient. Compared to 10 previous years, 2009 was a representative birch pollen season for all stations. About 90% of the allergen was found in the PM > 10 μm fraction at all stations. Bet v 1 isoforms pattern did not vary substantially neither during ripening of pollen nor between different geographical locations. The average European allergen release from birch pollen was 3.2 pg Bet v 1/pollen and did not vary much between the European countries. However, in all countries a >10-fold difference in daily allergen release per pollen was measured which could be explained by long-range transport of pollen with a deviating allergen release. Basophil activation by ambient air extracts correlated better with airborne allergen than with pollen concentration. Although Bet v 1 is a mixture of different isoforms, its fingerprint is constant across Europe. Bet v 1 was also exclusively linked to pollen. Pollen from different days varied >10-fold in allergen release. Thus exposure to allergen is inaccurately monitored by only monitoring birch pollen grains. Indeed, a humanized basophil activation test correlated much better with allergen concentrations in ambient air than with pollen count. Monitoring the allergens themselves together with pollen in ambient air might be an improvement in allergen exposure assessment.
    Keywords blood serum ; Betula ; monitoring ; exposure assessment ; ripening ; atmospheric chemistry ; enzyme-linked immunosorbent assay ; patients ; pollen ; mass spectrometry ; allergens ; air ; spore traps ; rats
    Language English
    Document type Article
    ISSN 1352-2310
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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