1409
We investigated the ability of PRL and IL-2 to activate Stat proteins in different T cell lines .
 protein: IL-2; cell line: T cell lines; protein: PRL; protein: Stat proteins
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: IL-2; cell line: T cell lines; protein: PRL; protein: Stat proteins