If allergens can survive the hostile environment of the stomach, they are absorbed by the intestines, enter the blood stream, and interact freely with the immune system.
If allergens can survive the hostile environment of the stomach, they are absorbed by the intestines, enter the blood stream, and interact freely with the immune system.
如果过敏原能够在安然无恙地经过胃，就能够在肠道被吸收入血然后可以自由地与免疫系统发生反应。