Human immune cells can be divided into two types, one is to protect the human body from invasion of the Armytype cells and the other is to maintain internal security of the Policetype cells The former is to achieve anti-viral infection through antigen-antibody reaction and its reaction usually takes a certain time The latter, also known as Natural Killer Cell, produces a million new cells a day, about 5,000 of them bad cells, which can lead to cancer, nK cells can detect and attack these bad cells and infected cells as soon as possible
It has been proved that R-1 lactic acid bacteria in yogurt can enhance NK cell activity
Army type immune cells are more resistant to infection.