8025
In contrast , Y / S heterozygous cows showed a 2 - fold increase in danofloxacin levels in milk .
 Chemical: danofloxacin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: danofloxacin