11979
In vitro release showed a controlled profile up to 12 h and the formulation containing 0 . 15 % ( w / v ) of bacitracin revealed a maximum biological activity of about 49 . 1 +/- 4 . 1 % .
 Chemical: bacitracin
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: bacitracin