Fig. 2.
Fig. 2. E64d blocks anti-CD3–induced upregulation of Fas ligand protein. 2B4.11 cells were activated with the indicated concentrations of plastic-coated 2C11 in the presence or absence of 100 μmol/L E64d for 2 hours. [3H]thymidine-labeled L1210 cells or L1210-Fas cells were then added to the cultures. The parentheses in the legend indicate the time of addition of E64d: (2B4.11 + E64d), E64d added at time 0; (E64d + L1210-Fas), E64d added with the L1210-Fas cells, 2 hours after initiation of the culture. After another 6 hours of incubation, the cells were harvested and the percentage of DNA fragmentation determined. Similar results were obtained in three independent experiments.

E64d blocks anti-CD3–induced upregulation of Fas ligand protein. 2B4.11 cells were activated with the indicated concentrations of plastic-coated 2C11 in the presence or absence of 100 μmol/L E64d for 2 hours. [3H]thymidine-labeled L1210 cells or L1210-Fas cells were then added to the cultures. The parentheses in the legend indicate the time of addition of E64d: (2B4.11 + E64d), E64d added at time 0; (E64d + L1210-Fas), E64d added with the L1210-Fas cells, 2 hours after initiation of the culture. After another 6 hours of incubation, the cells were harvested and the percentage of DNA fragmentation determined. Similar results were obtained in three independent experiments.

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