Fig. 3.

Accumulation of macrophages and lymphocytes in lung samples, following Mtb infection as a function of prior BCG vaccination. Absolute cell counts in BAL samples are shown (on the Y-axis) for BCG-vaccinated (red) and sham-vaccinated (blue) NHPs. X-axis in all cases represents time post-Mtb challenge. Thus, a time-point denoted as 3 corresponds to a post-vaccination time-point 3-weeks prior to Mtb challenge. (A) CD3⁺ cells. (B) CD3⁺CD4⁺ cells. (C) CD3⁺CD8⁺ cells. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)