Final answer:
The statement about cytokines being produced by activated T cells upon interaction with antigen-presenting cells (APCs) in the adaptive immune response is true. Helper T cells and cytotoxic T lymphocytes (CTLs) get activated by APCs and subsequently produce cytokines.
Step-by-step explanation:
The statement 'Cytokine produced from activated T cell upon binding with APC in the adaptive immune response' is true. When helper T (TH) lymphocytes of the adaptive immune system interact with antigen-presenting cells (APCs) via MHC class II molecules, they get activated. The activation of helper T cells involves a recognition process where the T cell receptor (TCR) identifies foreign epitopes presented by the APC. After successful activation, the helper T cells proliferate and secrete cytokines that can initiate different immune responses such as stimulating B cells or other T cells. Similarly, cytotoxic T lymphocytes (CTLs) express CD8 and recognize antigens presented with MHC I molecules on APCs, leading to their activation, clonal proliferation, and differentiation. These activated CTLs also produce cytokines, which play a role in modulating the immune response.