11524
LR1 also binds Ig heavy chain switch region sequences and may function in class switch recombination.
 protein: Ig heavy chain; protein: LR1
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: Ig heavy chain, LR1 
Answer:
 protein: Ig heavy chain; protein: LR1