Staphylococcal Superantigens: Pyrogenic Toxins Induce Toxic Shock

Abstract excerpt

are potent activators of the immune system. These protein toxins bind to major histocompatibility complex (MHC) class II molecules and specific Vβ regions of T-cell receptors (TCRs), resulting in the activation of both monocytes/macrophages and T lymphocytes. The bridging of TCRs with MHC class II molecules by superantigens triggers an early "cytokine storm" and massive polyclonal T-cell proliferation....

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