Sentences with phrase «harmless foreign substances»

Regulatory T cells (or «Tregs» for short) play a central role in the human immune system: They guide all of the other immune cells and make sure they are tolerant of the body's own cells and harmless foreign substances.

Defender cells would be fiercely fighting off even harmless foreign substances like the parts of certain kinds of food, for example, as the immune system would simply not be «tolerant» towards these harmless substances.

Not exact matches

Overloaded and overstimulated, the immune system responds to normally harmless substances as if against a harmful foreign invader.

And why is that an otherwise harmless substance is then treated as a foreign invader to be attacked by the immune system?