Fig. 7

Photomicrographs of sections of lung from naturally infected rats with R. hymenolipidoides: showing (A) Emphysema (permanent enlargement of the air spaces distal to the terminal bronchioles, and destruction of the alveolar walls) (thin arrow), congestion in blood vessel (star) and degeneration in bronchial epithelium, (B) bronchial lymphoid cell reaction (thick arrow), severe congestion in blood vessels (star) and marked degeneration in bronchial epithelium (thin arrow).