9380
Thus , while the modification of proteins or peptides in solution takes several days to lead to a significant amount of modification , in RHE the modifications of nucleophilic amino acids were observable already at 24 h .
 Chemical: amino acids
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: amino acids 
Answer:
 Chemical: amino acids