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What is Cytokines are released by: September 2012 and explain in detail?
Ans. C i.e. T lymphocyte T helper cells (Th cells) They are a sub-group of lymphocytes that play an impoant role in the immune system, paicularly in the adaptive immune system. They help the activity of other immune cells by releasing T cell cytokines. They are essential in B cell antibody class switching, in the activation and growth of cytotoxic T cells, and in maximizing bactericidal activity of phagocytes such as macrophages.