2730
This unusual behaviour may be explained by the 18 amino acid - long CDR - H3 and could be of value in the design of ' single domain ' antibodies .
 GENE: 18 amino acid - long CDR - H3
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: 18 amino acid - long CDR - H3