Histopathology of the lung of BALB/c mice after intranasal sensitization with M. pneumoniae-sonicated antigens. The figure shows hematoxylin and eosin staining of lung sections from mice repeatedly inoculated with M. pneumoniae antigens (day 29). Lung tissue sections from (a) Group A, (b) Group B, (c) Group C and (d) Group D (control) (magnification: × 200).
Kurata et al. BMC Microbiology 2014 14:156 doi:10.1186/1471-2180-14-156