13907
The role of E-proteins in B- and T- lymphocyte development .
 protein: E-proteins
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: E-proteins 
Answer:
 protein: E-proteins