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 I-immediate hypersensitivity (IgE antibody)Type II-cytotoxic antibody (target cell-specific IgG)Type III-immune complex disease (IgG binds antigen big time and causes insoluble antibody-antigen complexes to form)Type IV-Delayed-type (effector T cells/macs attack antigen-coated host cells).ype I-immediate hypersensitivity (IgE antibody)Type II-cytotoxic antibody (target cell-specific IgG)Type III-immune complex disease (IgG binds antigen big time and causes insoluble antibody-antigen complexes to form)Type IV-Delayed-type (effector T cells/macs attack antigen-coated host cells).