Neuropathology in the olfactory bulb of a JEV-infected pig at 5 days pi (score 3).
A Histopathology of the olfactory bulb (bub) and tract (tract). Multifocal glial nodules were present in the grey matter of the olfactory bulb (arrows) and accompanied by mononuclear perivascular cuffs (arrowheads). H and E, 20× magnification, bar = 500 µm. B Higher magnification (400×) of one glial nodule shown in A). One degenerated, shrunken neuron (arrow) in the olfactory bulb is surrounded by a nodule of microglial and inflammatory cells. H and E, bar = 20 µm.