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Treatment of human B lymphocytes with an optimal concentration of okadaic acid , an inhibitor of phosphatases 1 and 2A , resulted in the induction of the transcription factor , AP-1 and a marked increase in NF-kappa B levels .
 protein: transcription factor; protein: NF-kappa B; protein: AP-1; cell type: human B lymphocytes
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: transcription factor; protein: NF-kappa B; protein: AP-1; cell type: human B lymphocytes