Finally, there are the mast cells which are also non-phagocytic and they're involved in asthma and allergic responses.

最后，还有肥大细胞，它们也没有吞噬作用，还参与了哮喘和过敏反应。

The food proteins get noticed by IgE, which activates the mast cells.

食物中的蛋白质会被 IgE 注意到，从而激活肥大细胞。

First they activate a part of the immune system called a mast cell, which then expels a lot of chemicals, like histamines.

首先，它们激活称为肥大细胞的免疫系统的一部分， 然后排出大量化学物质，如组胺。