Fig. 11From: Oral or intranasal immunization with recombinant Lactobacillus plantarum displaying head domain of Swine Influenza A virus hemagglutinin protects mice from H1N1 virusHistopathological lesions in the lungs of H1N1-challenged mice stained with haematoxylin and eosin (H&E). a H&E for oral administration group; b H&E for intranasal immunization group; Scale bar (black) 200 μm; (red) 50 μm. PBS: phosphate buffered salineBack to article page