Emboli of central nervous tissue were detected in the jugular venous blood
of two of 15 sheep stunned with a conventional cartridge-operated captive b
olt gun and in two of 15 sheep stunned with a pneumatically activated gun.
No emboli were detected in arterial blood from these sheep or in venous blo
od from sheep stunned electrically. Emboli from an animal with BSE could tr
ansmit the disease to people.