9897
Suppression of MHC class II expression by human class II trans-activator constructs lacking the N-terminal domain .
 N-terminal domain, human class II trans-activator constructs, MHC class II
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 N-terminal domain, human class II trans-activator constructs, MHC class II