In our gastrointestinal tract, to alert our immune system if we swallow a dose of salmonella bacteria.
In our gastrointestinal tract, to alert our immune system if we swallow a dose of salmonella bacteria.
它们也会出现在消化道，只等我们吃进沙门氏菌时提醒免疫系统。
In our gastrointestinal tract, to alert our immune system if we swallow a dose of salmonella bacteria.
它们也会出现在消化道，只等我们吃进沙门氏菌时提醒免疫系统。