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. 2008 Oct 22;3(10):e3485. doi: 10.1371/journal.pone.0003485

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Finan et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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A) Histogram showing distribution of BCG scar size in 236 infants measured at 2 months of age following BCG at birth. B) Histogram showing distribution of average TST size in 202 infants tested at 2 months of age following BCG at birth. C) Scatterplot showing correlation between interferon-γ and TST responses to PPD. D) Box and whisker plot showing median IFN-γ concentrations (pg/ml) in supernatant following stimulation with PPD in infants grouped according the size of TST response. IFN-γ: interferon-gamma; PPD: purified protein derivative; TST: tuberculin skin test.