1. Volume 133, Issue 6, Pages 1415-1420 (June 2008)
The Effect of Previous Tuberculin Skin Test on the Follow-up Examination of Whole- Blood Interferon-γ Assay in the Screening for Latent Tuberculosis Infection 
Jae Chol Choi, MD, Jong Wook Shin, MD, Jae Yeol Kim, MD, In Won Park, MD, Byoung Whui Choi, MD, Mi-Kyung Lee, MD 
CHEST 
Volume 133, Issue 6, Pages (June 2008)
DOI: /chest
Copyright © 2008 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Effect of the TST on the IFN-γ assay in TST-positive individuals (n=24). The IFN-γ assay was carried out before TST administration (first test) and 2 to 4 weeks later (second test). Three subjects showed conversion on the second IFN-γ assay (*).
CHEST  , DOI: ( /chest )
Copyright © 2008 The American College of Chest Physicians Terms and Conditions