The following tissues are designated as specified risk material:
(i) the skull including the brain and eyes, the tonsils, the vertebral column excluding the vertebrae of the tail, and the transverse processes of the lumbar vertebrae, but including dorsal root ganglia and spinal cord of bovine animals aged over 12 months, and the intestines from the duodenum to the rectum of bovine animals of all ages;
(ii) the skull including the brain and eyes, the tonsils and the spinal cord of ovine and caprine animals aged over 12 months or which have a permament incisor erupted from the gum, and the spleen of ovine and caprine animals of all ages.