9852
These results show that Spi-1/ PU.1 requires signals emanating from specific cytokine and growth factor receptors to affect the survival, proliferation and differentiation control of primary erythroblasts .
 protein: PU.1; cell type: primary erythroblasts
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: PU.1, primary erythroblasts 
Answer:
 protein: PU.1; cell type: primary erythroblasts