4689
Autocrine activation by interferon-gamma of STAT factors following T cell activation .
 protein: STAT factors; protein: interferon-gamma
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: STAT factors, interferon-gamma 
Answer:
 protein: STAT factors; protein: interferon-gamma