1023
Inhibition of transcription factors belonging to the rel/ NF-kappa B family by a transdominant negative mutant .
 protein: NF-kappa B; protein: rel/ NF-kappa B family; protein: transdominant negative mutant; protein: transcription factors
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: NF-kappa B; protein: rel/ NF-kappa B family; protein: transdominant negative mutant; protein: transcription factors