The adverse effects on functioning of systematic
and local immune system leads to immunotoxicology.
As observed in animals and humans it is clearly demonstrated that the
industrial and environmental chemicals can affect the immune system adversely.
Immune system alteration can cause immunosuppression or exaggerated immune
reaction. Immunosuppression leads to severity of infectious disease or cancer. Immunotoxicology
deals with toxic substances and it explores the mechanisms which underlies the
effects in biological system