8998
To assess the phosphorylation of serine residues of STAT1 and STAT3 in CLL cells , we raised antibodies that specifically recognize the form of STAT1 phosphorylated on ser-727 and the form of STAT3 phosphorylated on ser-727 .
 protein: STAT3; protein: STAT3; cell line: CLL cells; protein: STAT1; protein: STAT1
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: STAT3, STAT3, CLL cells, STAT1, STAT1 
Answer:
 protein: STAT3; protein: STAT3; cell line: CLL cells; protein: STAT1; protein: STAT1