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However , in each case in which either the DQ alpha - or DQ beta - chain was exchanged , major alterations or reversals of this pattern of interaction were observed .
 GENE: DQ alpha - or DQ beta - chain
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: DQ alpha - or DQ beta - chain