google-site-verification=tTxPaNb_Cgt7sJ7QHZVSlBSG3nCh95l6oCFeBFtTFrA
 

Immune system

Immune system is the defensive structure of the body to protect itself. If its function is not stable, humans are likely to be attacked and tortured by viruses and bacteria. The most common illness are viral infection, URI, common colds etc.