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→Introduction
Cell mediated hypersensitivity:
Cell mediated hypersensitivity:
Type IV hypersensitivity also known as delayed hypersensitivity involves [[Cytokines - WikiBlood|cytokines]] being secreted from the Th-I cells, which cause the activation of [[Macrophages - WikiBlood|macrophages]] and other T cells.
Type IV hypersensitivity, also known as delayed hypersensitivity, involves [[Cytokines - WikiBlood|cytokines]] being secreted from the Th-I cells, which causes the activation of [[Macrophages - WikiBlood|macrophages]] and other T cells.
* [[Lymphocytes - WikiBlood#Helper CD4+|'''CD4+ (helper)''']] mediated:
* [[Lymphocytes - WikiBlood#Helper CD4+|'''CD4+ (helper)''']] mediated: