5579
Thrombopoietin is known to be essential for megakaryocytopoiesis and thrombopoiesis .
 protein: Thrombopoietin
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: Thrombopoietin 
Answer:
 protein: Thrombopoietin