Figure1
Fig. 1: A scanning electron micrograph of canine tracheal tissue infected by B. bronchiseptica, using a method described in ref. 25. The Bordetella display a remarkable preference for the cilia of the respiratory epithelium (white arrow), as evidenced by the large numbers of bacteria adherent to the 2 ciliated cells in this field (large black arrows) while the surrounding non-ciliated tissue (small black arrows) remains virtually free of colonization.