When the Mtb‐affected areas of the lungs of these mice were compared to the total lung area by histopathologic analysis (Figure 3a, images) Siglec‐1 knockout mice had slightly smaller affected areas at week 3 post‐infection (p.i.), but a much higher percentage of damaged tissue than wild type mice at week 4 p.i. (Figure 3a, graphs, P‐value 0.029; Mann‐Whitney test). Here, SIGLEC1 is linked to infection.