1648
Similar to its effect on the induction of AP1 by okadaic acid , PMA inhibits the induction of c-jun mRNA by okadaic acid .
 RNA: c-jun mRNA; protein: AP1
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:
 RNA: c-jun mRNA; protein: AP1