1624
Jak1 , Jak2 , and Stat1 were immunoprecipitated from control and interferon-treated cells , and tyrosine phosphorylation of these proteins, detected by antiphosphotyrosine immunoblotting was used to measured their activation.
 protein: Jak1; protein: Jak2; protein: Stat1; cell line: interferon-treated cells
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: Jak1; protein: Jak2; protein: Stat1; cell line: interferon-treated cells