Figure 6.

Radioautograph of multiprobe RPA run using 35S-labeled probes to detect mRNA for IFN-γ, NOS2, IL-4, IL-13, IL-15, and IL-2Rα in the lungs of WT and TCR-α/β−/− mice on days 0, 10, 20, 30, and 50 of infection. The results clearly show upregulation of mRNA for NOS2 and IFN-γ from day 20 of infection in WT mice. Much less IFN-γ mRNA was present in the lungs of TCR-α/β−/− mice from day 30 on, and the production of NOS2 mRNA was delayed. IL-15 mRNA was constitutively produced in the lungs of both groups of mice, and its synthesis appeared to be little altered by infection. GAPDH, glyceraldehyde 3-phosphate dehydrogenase.