27588
Both antibody titers to hTSH - R 37 , and reaction of splenocytes to hTSH - R 37 , were significantly reduced in mice immunized to hTSH - R 37 plus 37m , compare to mice immunized to hTSH - R 37 alone . The ability of immunization to a single peptide to induce antibodies that bind hTSH - R - ECD protein , and multiple unrelated peptides , is a unique observation .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None