FIG. 3.

Pulmonary pathology in common marmosets infected with Lassa virus. A multifocal interstitial pneumonitis was observed in two of four animals (Table 1), as evidenced by septal thickening, alveolar edema, and increased numbers of inflammatory cells (A). In these animals, multifocal periarterial edema (B) and multifocal hypertrophy of pleural mesothelial cells (C) were observed.