Fig. 4. Histological analyses of liver, spleen, and brain after rVSVΔG-JUNVGP vaccination and JUNV challenge.
Representative images from control, prime, and prime-boost vaccinated animals. a H&E: tissue stained with hematoxylin and eosin. Control animals have observable hepatocyte vacuolation (liver), germinal center degeneration characterized by lymphoid depletion and hemorrhage (spleen), and gliosis (brain). No significant lesions are observable in the liver, spleen, or brain of prime or prime-boost vaccinated animals. b IHC: tissue stained with JUNV-specific antibody. Control animals have observable immunolabeling of hepatocytes (liver), germinal centers (spleen), and neurons (brain). No detectable immunolabeling in the liver, spleen, or brain of prime or prime-boost vaccinated animals. Brain images are 10x and spleen/liver are 20x magnification; scale bar 100 μm (brain) and 20 μm (spleen/liver).