Omphalitis, yolk sac infection, chick

Omphalitis, yolk sac infection, chick

Yolk sac infection, with perihepatitis and pericarditis. Note the thick and yellow pericardial sac: the liver is enlarged, and there is multifocal accumulation of caseous exudate on the Glisson's membrane. There is also accumulation of caseous exudate in the abdomen

Courtesy of Dr. H. John Barnes.

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