Fig. 7.
The IFN-γ–induced increase in high-affinity IL-12 receptor expression is mediated by IL-12. PBMC were activated with PHA, PHA + IFN-γ, or PHA + IFN-γ + anti–IL-12. Binding studies using [125I]–IL-12 were performed and the results analyzed using the Scatchard method. Similar results were obtained in three separate experiments.