Figure 2.

Distribution of T cell frequencies among PPD negative, sarcoidosis and PPD+ subjects. The horizontal bars represent the 25^th, 50^th and 75^th percentile respectively. There was a lack of recognition of sodA peptides among the majority of the PPD- control group, and a significant difference overall among the three groups. Among the sarcoidosis subjects, the distribution of the T cell frequencies among the sarcoidosis subjects more closely paralleled that of the PPD positive subjects also, rather than the PPD negative healthy volunteers.