3636
E3 , one of nine sequences identified, was upregulated in an immediate-early manner , with transcript levels peaking after 60 minutes exposure to RA .
 protein: E3
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: E3 
Answer:
 protein: E3