Fig. 5From: Intranasal delivery of plasmids expressing bovine herpesvirus 1 gB/gC/gD proteins by polyethyleneimine magnetic beads activates long-term immune responses in miceHistopathological examination of mice vaccinated with the DNA vaccine. The mice are vaccinated with the indicated DNA vaccine and its components. The tissue sections derived from the liver, spleen, lung, and kidney are used for histopathological examination at the 1st and 8th week after the second immunization. The PBS group is used as a controlBack to article page