Merck Manual

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Bordetella avium , trachea, 7 days after infection
Bordetella avium , trachea, 7 days after infection

Scanning electron microscopy of a trachea from a poult 7 days after infection, showing mucus and individual B avium on the luminal surface. The tracheal lining is completely devoid of ciliated columnar epithelial cells.

Courtesy of Dr. Mark W. Jackwood.

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Bordetellosis in Poultry