Sampling areas of the porcine lungs infected with Actinnobacillus pleuropneumoniae. 1 – Necrotic area, within pulmonary lesion. 2 – Demarcation zone, border area between visually unaffected and pulmonary lesions. 3 – Visually unaffected area, which was sampled either from unaffected lung lobe (3 to the left) or from site as distant from pulmonary lesion as possible (3 to the right).
Podolska et al. BMC Genomics 2012 13:459 doi:10.1186/1471-2164-13-459