
Fig. 1
Balantidium coli (arrows) in the intestinal lumen (haematoxylin and eosin, × 100)

Fig. 2
Balantidium coli (arrows) invading colonic mucosa (haematoxylin and eosin, × 200)

Fig. 3
Balantidium coli (arrows) in colonic mucosa (haematoxylin and eosin, × 100)

Fig. 4
Balantidium coli cyst detected in faeces