Local and Systemic CD4⁺ T Cell Exhaustion Reverses with Clinical Resolution of Pulmonary Sarcoidosis.

The percentages of IL-2-producing CD4 + T cells in BAL relative to the periphery at baseline approached significance ( Figure 6(a) , p = 0.06), while no distinctions in the percentage of or IFN- γ -producing CD4 + T cells were noted ( p = 0.25).

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