Fig. 3

Scanning electron microscope observation of bronchi ciliary structure. Lungs containing bronchi of all pigs were removed for gross lesion observation and sample collection. a and c represent cilia observations of bronchi samples taken from Bama miniature pigs infected with the M. hyopneumoniae strain JS at 2000 and 10,000 × magnifications, respectively. Elliptical erythrocyte-like forms of M. hyopneumoniae are marked by white arrows on the truncated cilia (c). b and d represent cilia observations of bronchi samples taken from Bama mininature pigs in the control group at 2000 and 10,000 × magnifications, respectively