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Figure 5 Spearman correlation of frequencies of circulating interferon (IFN)-{gamma}+/CD3+ T cells and mRNA transcript levels of IFN-{gamma} (A) and signal transducer and activator of transcription 4 (B). Area of the density ellipse represents the 95% confidence interval. RU = relative units; STAT = signal transducer and activator of transcription.