915
The effect of constitutive Tax expression on the interaction of NF-kappa B with its recognition sequence and on NF-kappa B -dependent gene expression was examined in T lymphoid Jurkat cell lines ( 19D and 9J ) stably transformed with a Tax expression vector .
 cell line: 19D; DNA: recognition sequence; protein: Tax; protein: Tax; protein: NF-kappa B; DNA: Tax expression vector; cell line: 9J; cell line: T lymphoid Jurkat cell lines; protein: NF-kappa B
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:
 cell line: 19D; DNA: recognition sequence; protein: Tax; protein: Tax; protein: NF-kappa B; DNA: Tax expression vector; cell line: 9J; cell line: T lymphoid Jurkat cell lines; protein: NF-kappa B