Household dust which includes long hairs such as cat fur, twisted synthetic and woollen fibres, serrated insect scales, a pollen grain, plant and insect remains.

家庭灰尘，可以看到包括猫毛，扭曲的合成和羊毛纤维，锯齿状的昆虫鳞屑，花粉粒，植物和昆虫尸体。

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"In contrast to, say, dust mites, which are heavy and sink quickly to the ground, both cat and dog dander are light and fluffy allergens, and they stay afloat for hours, " says Dr. Miranowski.

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