T helper cells and interleukin molecules, illustration

Bildnummer 12986192
T helper cells and interleukin molecules, illustration
T helper cells and interleukin molecules, illustration. T helper cells play an important role in the immune system. After activation by an antigen-presenting cell, this T helper cell is segregating interleukin (IL) cytokines. From left to right (across bottom), these are: IL-4, IL-5, IL-6, IL-10 and IL-13. This leads to B cell antibody class switching, activation of cytotoxic T cells, and maximizing the bactericidal activity of phagocytes such as macrophages. For this illustration with labels, see image F025/2791.
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Credit: Science Photo Library / Gaertner, Juan
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