Morphological analysis of murine coinfected tissue by hematoxylin-eosin staining. A.

<p>Representative microscope images of hematoxylin-eosin staining of liver tissues from each group of mice uninfected, infected with <i>B. henselae</i>, <i>B. fragilis</i> and <i>B. fragilis</i> ΔPSA or coinfected, as detailed. Granulomatous inflammatory infiltrates are predominantly evident in the group of mice infected with <i>B. henselae</i> compared to the group infected with <i>B. henselae</i> and <i>B. fragilis</i> ΔPSA and particularly in the mice coinfected with <i>B. henselae</i> and <i>B. fragilis</i>. Uninfected controls are negative, as well as <i>B. fragilis</i> and <i>B. fragilis</i> ΔPSA groups. <b>B.</b> Representative sections stained with hematoxylin-eosin of aortas from all mice groups as described. In the group of mice infected with <i>B. henselae</i>, minimal lesions are observed in the aorta compared to liver tissues.