8037
Markedly impaired binding was observed, consistent with both the use of different anchor residues and with changes in levels of DQ cis- dimer availability for peptide binding interactions .
 dimer
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:
 dimer