Burkholderia pseudomallei aerosol infection of C57BL/6 mice induces scattered, dense cellular infiltrates in the lung. C57BL/6 mice were infected by deposition of 292 CFU/lung B. pseudomallei or were sham-infected under similar conditions. Lungs harvested one (a,b,c) and four (d,e,f) days after infection or 1 day after sham infection (g,h,i) were fixed in 4% paraformaldehyde before sectioning and staining with haematoxylin and eosin.