2674
Alterations in TCR - MHC contacts subsequent to cross - recognition of class I MHC and singly substituted peptide variants .
 GENE: TCR; GENE: MHC; GENE: class I MHC
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: TCR; GENE: MHC; GENE: class I MHC