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. 2015 Jul 24;8:312. doi: 10.1186/s13104-015-1260-3
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Additional file 3: Dull syndrome. Steer P75-1 presenting with the dull syndrome at 18 months after intracerebral inoculation with the pre-1975 scrapie pool; TSE confirmed by postmortem tests. Initially, the clip shows two events of difficulty rising (the steer is briefly marked by an orange arrow to distinguish it from one of its pen mates). Dull demeanour is displayed on three separate occasions on the same day: the steer stands with its head between the wall and ladder in the pen, also temporarily resting its head on the ladder, for approximately two minutes (indicated by the counter on the top left corner of the clip). It also stands motionless with its head in the corner of the pen or in the gap between the wall and the pen divider. Loss of balance is evident during a neurological examination carried out two days later. The signs were suggestive of a diffuse or multifocal brain disease.