CD1B and ALDH1A2 expression in TB lung. TB patient lung and normal lung tissue protein expression of ALDH1A2 (A), CD163 (B), and CD1B (C) by immunohistochemistry. Data shown are representative images (TB lung [TB], n = 8 to 10; normal lung [NL], n = 4 to 5). Scale bar, 40 μm. Expression of ALDH1A2 (D), CD163 (E), and CD1B (F) in TB versus normal lung was quantified per nucleated cell using Immunoratio. Data shown are the average percentage of positive cells/nucleus + SEM. P value by Student’s t test. *, P < 0.05; ***, P < 0.001.