20749
Recent efforts to identify treatments for myocardial ischemia reperfusion injury have resulted in the discovery of a novel series of highly potent alpha , alpha - disubstituted amino acid - based arginase inhibitors .
 Chemical: alpha , alpha - disubstituted amino acid
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: alpha , alpha - disubstituted amino acid