Around us, in the environment, there are many microbes that can harm our body, causing illness or even death. Our cells that defend us against these microbes are called immunocytes or white blood cells. The immunocytes are very important to protect our body. Like we defend our bodies, it is also very important to care the health of our soul. In this book I will show you the armor that protects the soul of our immunocyte Felix.

Human beings need to tolerate foreign molecules that benefit us, such as food or 'good' microbes. Learn how our T regulatory lymphocytes control our powerful immune army. A book for all ages