Figure 3From: Highly pathogenic or low pathogenic avian influenza virus subtype H7N1 infection in chicken lungs: small differences in general acute responsesDetection of AIV (nucleoprotein positive cells) in the lung by immunohistochemistry at 24 hpi (A and C) and 16 hpi (B and D). LPAI infected cells are localised around the intrapulmonary bronchus and in adjacent parabronchi (A), but not in the periphery (B). HPAI infected cells are detected around the intrapulmonary bronchus (C) and in peripheral parabronchi (D).Back to article page