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Transient-transfection experiments in embryonal carcinoma cells demonstrate a functional cooperation between p50B and RelB or p65 in transactivation of a reporter plasmid dependent on a kappa B site .
 DNA: kappa B site; protein: p65; protein: p50B; protein: RelB; DNA: reporter plasmid; cell line: embryonal carcinoma cells
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:
 DNA: kappa B site; protein: p65; protein: p50B; protein: RelB; DNA: reporter plasmid; cell line: embryonal carcinoma cells