Neuropathology of wild-type C57BL/6 and Jα18 knockout (KO) mice,
1 week and 2 months post infection (p.i.). Wild-type C57BL/6 and Jα18 KO
mice were infected intracerebrally with the Daniels (DA) strain of
Theiler’s murine encephalomyelitis virus (TMEV). (A) During the acute
phase of TMEV infection, 1 week p.i., wild-type C57BL/6 and Jα18 KO mice
had similar levels of meningitis (arrows), perivascular cuffing (paired arrows),
and neuronal loss (arrowheads) in the hippocampus. Sections were representatives
of six wild-type C57BL/6 and 10 Jα18 KO mice. Magnification,
35×. (B) During the chronic phase of TMEV infection, 2 months p.i.,
neither wild-type C57BL/6 nor Jα18 KO mice developed lesions in the
spinal cord, while susceptible SJL/J mice developed severe demyelination
(arrowheads) in the ventral funiculus of the spinal cord. Sections were
representatives of 12 wild-type C57BL/6 and 21 Jα18 KO mice.
Magnification, 23×. (A, B) Luxol fast blue staining.