1644
In contrast to phorbol esters such as phorbol myristate acetate ( PMA ), the induction of AP1 by okadaic acid occurs predominantly by transcriptional activation of the jun and fos family of proto-oncogenes .
 protein: AP1; DNA: proto-oncogenes
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: AP1; DNA: proto-oncogenes