4101
Ligand activation of c-ErbB induced the tyrosine phosphorylation , DNA-binding , and reporter gene transcription of Stat 5b in erythroblasts .
 cell type: erythroblasts; DNA: reporter gene; protein: Stat 5b; protein: c-ErbB
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: erythroblasts, reporter gene, Stat 5b, c-ErbB 
Answer:
 cell type: erythroblasts; DNA: reporter gene; protein: Stat 5b; protein: c-ErbB