ICT (Information Communications Technology) is a term widely used in the context of education. Even though there is no universally accepted definition for ICT, it mainly refers to utilizing digital technologies such as computers, television, email, etc to help individuals or organizations to use information.
Type IV (called also delayed hypersensitivity) involves sensitized T lymphocytes that react with cell bound or associated antigen and release lymphokines, causing mononuclear cell accumulation, tissue damage and inflammation, typically manifesting at least 24 hours after exposure to the antigen.
Type III (ICM) Hypersensitivity Type III (Immune ComplexâMediated) Hypersensitivity Type III hypersensitivity is also known as immune complex hypersensitivity. The reaction may take 3 - 10 hours after exposure to the antigen (as in Arhus reaction).