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- W2051178853 abstract "T cells interact with dendritic cells (DCs) for periods lasting from minutes to hours. However, a causal link between the duration of this interaction and the efficiency of T cell activation has not been established in vivo. Employing intravital two-photon imaging, we manipulated T cell-DC interactions in real time and found that the first T cell-DC encounter often resulted in a long-lived interaction. Moreover, the cessation of T cell receptor-major histocompatibility complex signals promoted cellular dissociation, suggesting that antigen availability on DCs regulates contact duration. Finally, at least 6 hr of in vivo T cell-DC interaction were required for naive CD4+ T cells to undergo clonal expansion. These results establish the importance of prolonged T cell-DC interactions for efficient CD4+ T cell activation in vivo." @default.
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- W2051178853 date "2007-10-01" @default.
- W2051178853 modified "2023-10-06" @default.
- W2051178853 title "Real-Time Manipulation of T Cell-Dendritic Cell Interactions In Vivo Reveals the Importance of Prolonged Contacts for CD4+ T Cell Activation" @default.
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- W2051178853 doi "https://doi.org/10.1016/j.immuni.2007.08.018" @default.
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