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The effects of TGF-beta on two transcriptional regulatory factors , Oct-2 and nuclear factor (NF) kappa B , known to be important in Ig gene transcription were examined.
 protein: Ig; protein: Oct-2; protein: transcriptional regulatory factors; protein: TGF-beta; protein: nuclear factor (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:
 protein: Ig; protein: Oct-2; protein: transcriptional regulatory factors; protein: TGF-beta; protein: nuclear factor (NF) kappa B