tokens: The BRLF1 product Rta functions as a transcriptional activator in both B lymphocytes and epithelial cells .
folded_tokens: the brlf1 product rta functions as a transcriptional activator in both b lymphocytes and epithelial cells .
labels: O B-DNA_domain_or_region O B-protein_molecule O O O O O O O B-cell_type I-cell_type O B-cell_type I-cell_type O