the virus of equine encephalomyelitis ( eastern strain ) evokes in the horse , calf , sheep and dog an unusually intense encephalomyelitis characterized by acute primary degeneration of nerve cells , the appearance in neurons of the brain stem and elsewhere of nuclear inclusions resembling those in borna disease and poliomyelitis , polymorphonuclear infiltration in the nervous tissues with early microglial proliferation , and perivascular cuffing with mononuclears and polymorphonuclears in varying proportions .
C0027882
neurons
C0027757
nervous tissues