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B7+CTLA4+ T cells engage in T–T cell interactions that mediate apoptosis: a model for lentivirus-induced T cell depletion

T–t Cell InteractionsCell SignalingAdaptive Immune SystemImmunologyAntiviral ResponseCell DeathT Cell ImmunityHumoral ImmunityCd4 T Cell ResponsesCellular Immune ResponseMedicineCell BiologyViral ImmunityT Cell Biology