FIG. 6.

Amelioration of cellular infiltration and airway occlusion. Lungs were fixed, sectioned, and stained with hematoxylin and eosin. (A, C, E, and G) Tissue from mice infected with influenza virus alone is shown; (B, D, F, and H) tissue from mice preinfected with T. spiralis is shown. Representative sections from each group are shown at day 0 (A and B), day 2 (C and D), and day 7 (E and F) after influenza infection at 40× magnification. Sections of lungs at day 7 p.i. are also shown at 100× magnification (G and H). Bronchioles (b), alveoli (a), and blood vessels (bl) are shown. Infiltrating cells (i) are indicated, as are erythrocytes (e) in the alveolar spaces.