_____ are the general term designated for tissues of ruminan…

_____ are the general term designated for tissues of ruminant animals that transmit BSE and other TSE prions. The exact definition varies by jurisdiction. On January 12, 2004, the U.S. banned such substances from the human food supply. Moreover, the U.S. will prohibit some of them in animal feedstuffs beginning on April 27, 2009.