1535
Activation of PKC has been implicated in the regulation of certain immediate early response genes , and in the present studies, TPA rapidly induced c-fos and c-jun gene expression .
 DNA: c-jun gene expression; DNA: c-fos; DNA: immediate early response genes; protein: PKC
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: c-jun gene expression; DNA: c-fos; DNA: immediate early response genes; protein: PKC