23962
Cattle diseases were in the center of attention in the 1980 s and 1990 s when the Bovine spongiform encephalopathy ( BSE ) , also known as mad cow disease , was of concern .
 Bovine spongiform encephalopathy
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Bovine spongiform encephalopathy