LCMV-specific Tc activity in CCR5^−/− and wild-type (wt) C57BL/6 mice 8, 10, and 14 days after intravenous infection.

Mice were infected intravenously with 10³ LD₅₀of LCMV, and Tc activity was assayed in a ⁵¹Cr-release assay by use of GP33-41 peptide pulsed EL-4 cells as target cells. Unpulsed EL-4 cells served as control target cells. The Tc activity of 3 mice per group was assayed on the indicated days. “ai” denotes after infection.