6550
After binding of ligand, the EPOR activates a variety of signaling pathways that ultimately control cellular proliferation , survival, and specific gene expression.
 protein: EPOR
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: EPOR 
Answer:
 protein: EPOR