Immune cells are made by hematopoietic stem cells and can be divided into NK cells, T cells, B cell, dendritic cells and etc.
When encountering invasions, every cell in the body plays its role to protect the healthy cells and attack the mutated malignant cells.
also referred to as natural killer cells. They provide immune modulation function and can also directly recognize, attack and kill cancer cells. When in contact with cancer cells and virus-infected cells, NK cells will be activated to eliminate the cancer cells and the infected cells. NK cells account for approximately 2~6% of the white blood cells in the blood, representing a small proportion of cells. With the aging of human body and external environmental impacts, the quantity and activity of NK cells will decrease over time.
are a type of immune cells. Different types of cells can recognize or memorize target cells, destroy invaders and cells with poor function. T cells are developed and trained by the thymus to distinguish between our own cells and cancer cells, and subsequently eliminate the cancer cells. As we grow older, our body will start to decline from our peak stage during youth. Body functions will deteriorate. The amount of naïve T cells will reduce gradually, weakening the defense capacity of our immune system and eventually our immunity.