Doctors don’t have any issues answering these questions. Most of us, then again, know little in regards to the human physique. But what about you? Show. Topic this time: the immune system.
A most of two errors are allowed if you wish to efficiently defend your well being. Otherwise the pathogens will win!
https://www.welt.de/kmpkt/article256390016/10-Fragen-die-ein-Arzt-locker-beantworten-kann-und-du.html