Asthma is almost always associated with some type of IgE-related reaction and therefore has an allergic basis.[ 21 ] Numerous epidemiologic studies have shown a highly significant relationship between asthma and sensitization to various allergens as demonstrated by skin tests or the presence of specific IgE in the serum.
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Effect of <i>Angelica glauca</i> essential oil on allergic airway changes induced by histamine and ovalbumin in experimental animals.
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