FIG. 4.

Specificity of proliferative response of individual lung T-cell clones to indicated mycobacterial antigens. T-cell clones (4 × 10⁴) were cocultured with 10⁵ APCs with or without the indicated antigens; 60 h later, [³H]thymidine was added. Proliferation was assessed as [³H]thymidine uptake (expressed as mean ± standard deviation of triplicate determinations). Results of one representative experiment of three are shown (less than 15% differences were seen between individual experiments). For convenience, the results for individual clones are separated into panels a (strong response) and b (weak response).