6867
Protein kinase B ( c-Akt ), phosphatidylinositol 3-kinase , and STAT5 are activated by erythropoietin ( EPO ) in HCD57 erythroid cells but are constitutively active in an EPO -independent, apoptosis -resistant subclone ( HCD57-SREI cells ).
 protein: EPO; cell line: HCD57-SREI cells; protein: phosphatidylinositol 3-kinase; protein: c-Akt; protein: erythropoietin; cell line: HCD57 erythroid cells; cell line: EPO -independent, apoptosis -resistant subclone; protein: STAT5; protein: EPO; protein: Protein kinase B
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: EPO, HCD57-SREI cells, phosphatidylinositol 3-kinase, c-Akt, erythropoietin, HCD57 erythroid cells, EPO -independent, apoptosis -resistant subclone, STAT5, EPO, Protein kinase B 
Answer:
 protein: EPO; cell line: HCD57-SREI cells; protein: phosphatidylinositol 3-kinase; protein: c-Akt; protein: erythropoietin; cell line: HCD57 erythroid cells; cell line: EPO -independent, apoptosis -resistant subclone; protein: STAT5; protein: EPO; protein: Protein kinase B