On Friday afternoon, USDA reported that the second animal that turned up inconculsive on Tuesday tested negative for BSE.

"At approximately 2:45 EDT today, we were notified by the USDA National Veterinary Services Laboratories (NVSL) in Ames, Iowa, that the inconclusive screening test sample reported on June 29, tested negative for BSE upon confirmatory testing," said Deputy Administrator John Clifford for the Animal And Plant Health Inspection Service.

"NVSL used the world-recognized gold-standard test for BSE, the immunohistochemistry test to confirm this finding."