11620
Biotinylation , the functional appendage of a biotin moiety to a bioactive compound ( including small molecules and biological macromolecules ) , represents a common technique for identification of the intracellular binding partners that underlie the foundation of observed biological activity .
 Chemical: biotin
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: biotin 
Answer:
 Chemical: biotin