Antigen-Presenting Cells and T Cells

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Antigen_presenting_cells_and_T_ cells

Diagram of antigen-presenting cells (APCs) displaying antigens on MHC type I and type II protein complexes that T cells recognize. CD4+ cells help the effector T cells (CD8+) become fully activated. From Sjef – self made, CC BY-SA 3.0, via Wikimedia Commons

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