12615
Preclinical and clinical studies demonstrate the potential use of TPO in a variety of contexts, but it is too early to evaluate its benefit in reducing platelet transfusion .
 protein: TPO
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: TPO 
Answer:
 protein: TPO