With a cow's-milk allergy, the immune system has an abnormal reaction to milk protein.

而对牛奶过敏是指免疫系统对牛奶蛋白质有异常反应。

youdao

With a cow's-milk allergy, the immune system has an abnormal reaction to milk protein.

而对牛奶过敏是指免疫系统对牛奶蛋白质有异常反应。

youdao