Histological analysis of pneumonia and distribution of viral antigens in immunocompetent macaques infected with VN3040.

<p>Tissues were collected from macaques injected with control antibodies (C2) (A, C, E) or MAb ch61 (T1) (B, D, F) on day 7 after virus infection. A, B: low magnification of hematoxylin and eosin (H & E) staining (bar: 100 µm). C, D: high magnification of H & E staining (bar: 50 µm). E, F: sections stained with anti-NP serum (bar: 50 µm).</p>