Figure 1From: PR-39, a porcine host defence peptide, is prominent in mucosa and lymphatic tissue of the respiratory tract in healthy pigs and pigs infected with actinobacillus pleuropneumoniaeImmunohistochemical demonstration of PR-39 positive cells in lung tissue of mock infected pig 3. A) Semiserial haematoxylin-eosin stained histological section, bar 50 μm. B) PR-39 positive cells are distributed evenly within the lung tissue. Single large positive cells in the walls of every alveolus, bar 50 μm.Back to article page