Figure 1

C. perfringens -induced necrosis in experimentally infected intestinal loops in calves. (A) Representative histological section from an intestinal loop injected with sterile bacterial growth medium. There are no lesions in this negative control loop. (B) Representative histological section from an intestinal loop injected with the wild-type C. perfringens strain, showing hemorrhages and necrosis of the villi. HE, bars 200 µm.