The study of toxicity affecting the immune system is known as Immuno-Toxicology, toxin-induced immune dysfunction may take the form of immunosuppression, allergy, autoimmunity, increased vulnerability to cancer, or any number of inflammatory-based diseases or pathologies.
Agents that cause Immune toxicity are classified as:-
  • Allergy-type: heavy metals, acid anhydrides, penicillin, and propylthiouracil. 
  • Direct immune toxicity: dexamethasone, cyclosporin A, azathioprine, heavy metals, and air pollution. 
  • Indirect Immune toxicity: p, p'-DDE.