Fig. 2
From: Genetic variation of Mycoplasma hyopneumoniae from Brazilian field samples
Hematoxylin and eosin staining was performed to evaluate pathological changes and lesion score. 1 – Lesion Score 1 (white arrow) moderate lymphocytic infiltrate and (a) presence of hyaline cartilage around the bronchus (100x); 2 – Lesion Score 2 (white arrow) presence of intense peribronchiolar lymphocytic infiltrate (200x); 3 – Lesion Score 3 (200x); 4 – Lesion Score 4 (100x). White circles indicate the presence of bronchus-associated lymphoid tissue (BALT) hyperplasia