Figure 6From: Comparative studies on the pathogenicity and tissue distribution of three virulence variants of classical swine fever virus, two field isolates and one vaccine strain, with special regard to immunohistochemical investigationsBrain, blood vessel. Experiment II, PID 12. Degenerative changes. Brain, blood vessel. Experiment II, PID 12. Degenerative changes (pyknosis and karyorrhexis) of the endothelial cells. Haematoxylin-eosin staining. Magnification 540×.Back to article page