7735
Whereas the NF-kappaB binding activity in Tax -expressing T-cell lines consisted mostly of p50/c-Rel , fresh ATL samples contained p50/p50 and p50/p65 heterodimers .
 protein: p50/c-Rel; protein: NF-kappaB; protein: Tax; cell line: Tax -expressing T-cell lines
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: p50/c-Rel, NF-kappaB, Tax, Tax -expressing T-cell lines 
Answer:
 protein: p50/c-Rel; protein: NF-kappaB; protein: Tax; cell line: Tax -expressing T-cell lines