8682
The finding of Tax mutants segregating these two pathways suggested that the NF-kappaB pathway was essential for IL-2 -independent growth of CTLL-2 cells while the CRE pathway was unnecessary.
 protein: IL-2; protein: NF-kappaB; DNA: CRE; protein: Tax; cell type: CTLL-2 cells
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: IL-2, NF-kappaB, CRE, Tax, CTLL-2 cells 
Answer:
 protein: IL-2; protein: NF-kappaB; DNA: CRE; protein: Tax; cell type: CTLL-2 cells