POULTRY DISEASES 
17 
Fig. 19 
Figure 19.—Liver from a case of Black-Head, Entero hepatitis, in a turkey. 
Photograph about % natural size’; weight is 452 grams (about one pound), a in¬ 
dicates the yellowish-white necrotic areas, lesions of the disease. 
POST MORTEM.—Upon first opening the abdominal cavity, one’s at¬ 
tention is attracted by the enlarged liver with areas of dead tissue. Figure 
19 shows a liver about % natural size, weighing nearly one pound. One or 
both of the caeca are enlarged. The enlargement is usually a short distance 
from the blind point and ulcerated areas are observed. There will also be 
noted a straw-colored fluid in the loose tissue about the heart. Figure 20 is 
from tissue taken from an area in the edge of the necrotic portion marked 
b in Figure 19. The liver cells, as they are first affected, are shown at A 
