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Figure 2 | Respiratory Research

Figure 2

From: Isoniazid prophylaxis differently modulates T-cell responses to RD1-epitopes in contacts recently exposed to Mycobacterium tuberculosis: a pilot study

Figure 2

A-D. INH-treated TST+subjects without a past MTB exposure: time course ofM.tuberculosis-specific immune response. Responses to PPD, RD1 intact proteins, RD1 selected peptides and QTF-G in TST+ contacts that underwent INH therapy were evaluated over time at time 1 (baseline), time 2 (after 1–2 months of INH therapy), time 3 (therapy completion). Responses to PPD (A) were not significantly affected, unlike those to QTF-G (B), to RD1 intact proteins (C), and to RD1 selected peptides (D), which were found to significantly change over time. PPD: purified protein derivative; RD: region of difference; QTF-G: QuantiFERON TB Gold; IFN: interferon; IU: international units.

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