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Wondering why do you develop allergies against particular particles/agents? Do you know that the allergy is a type of immune response? How immunity is involved in raising allergies called Type-IV hypersensitivity is explained...
This lecture covers T cell-mediated delayed hypersensitivity reaction (Type IV). Sensitized T cells release cytokines that activate macrophages and act as chemotactic agents for inflammatory cells. Issues like Type I Diabetes Mellitus, Multiple Sclerosis, Guillain Barre Syndrome, Hashimoto's thyroiditis, Graft vs host, contact dermatitis and PPD are talked about.
