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Signals from the T‐cell recognition of antigen program effector functions are necessary to clear infections and tumors. The JNK pathway is critically important in regulating this process. In T lymphocytes, JNK1 and JNK2 have distinct functions depending on their maturation state and cell‐type. However, the mechanisms that regulate their isoform‐specific activity and function are still unclear. Here,...
T cell responses to low-affinity T cell receptor (TCR) ligands occur in the context of infection, tumors, and autoimmunity despite diminished TCR signal strength. The processes that enable such responses remain unclear. We show that distinct mechanisms drive effector/memory development in high- and low-affinity T cells. Low-affinity cells preferentially differentiate into memory precursors of a central...
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