In this clinical research,48 cases TB (Tuberculosis patients) participants and 48 cases
non-TB participants with lung disease who all meet the standard are divided into different
groups through a randomized and blind method. Every subject inject intradermally ESAT6-CFP10
and TB-PPD (tuberculin purified protein derivative) in different arms of the same person by
blind method. Specific gama-interferon (γ-IFN) detection is needed before the
injection.Measure the induration and (or) redness of longitudinal diameter size and
transverse diameter vernier caliper by vernier caliper after injection 24h, 48h and 72h. At
the same time, we observe all kind of adverse events in order to assess the safety of drug.