Immunohistochemical staining of CCR7, CCL19 and CCL21 in lung tissue. Staining of CCR7, CCL19 and CCL21 in lung tissue from control mice and from mice with sublethal and lethal doses of R. conorii infection is shown. Left panels show staining of lungs from controls. Middle panels and right panels show lungs from mice with sub-lethal and lethal infections, respectively. The panels show representative images from three mice in each group obtained with 10x objective. Scale bar: 100 μm.