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The specificity of CIITA for three major MHC class II genes , DR , DQ and DP , is mediated by its remaining C-terminal residues ( amino acids 317-1130 ).
 MHC class II genes, CIITA, amino acids 317-1130, C-terminal residues, MHC class II, DP, DQ, DR
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:
 MHC class II genes, CIITA, amino acids 317-1130, C-terminal residues, MHC class II, DP, DQ, DR