allergens

例句:

• These proteins are called allergens and are normally harmless.
  来自BBC
• Conjunctivitis causes Conjunctivitis is caused by infection or irritants, including allergens.
  来自BBC
• Free OfArtificial colors, preservatives, common allergens, yeast, wheat, soy, gluten and milk.
  不含人工色素, 防腐剂, 一般过敏源, 酵母, 小麦, 大豆, 麸质和牛奶.
  
• The allergens in all of the extracts survived the exposure.
  提取物中的过敏原都没有被胃内容破坏.
  
• With more allergens produced earlier, allergy season can last longer.
  由于产生更多过敏原的时间提早了, 过敏季节的时间也就延长了.
  
• First, there are an almost unlimited number of allergens.
  来自SA