H&E stained lung sections of mice challenged with <i>B. anthracis</i> spores.

<p>Lungs from infected and control mice were collected at 2, 4, and 8 weeks post-inoculation, fixed and subjected to H&E staining. Representative images displaying the alveoli and the airway from mice infected for 2 (<b>A</b>–<b>C</b>), 4 (<b>D</b>–<b>F</b>), and 8 weeks (<b>G</b>–<b>I</b>), and uninfected control mice (<b>J</b>–<b>L</b>) are shown. Scale bars represent 20 µm.