1071
Moreover, the induction of both Jak 1 and 3 , and STAT 5 activity strongly correlated with the growth-promoting effects of IL-7 , suggesting that this signal transduction mechanism may play a key role in IL-7 -induced proliferation .
 protein: IL-7; protein: STAT 5; protein: IL-7
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-7; protein: STAT 5; protein: IL-7