1576
In addition we assayed the level of mRNA encoding c-Fos , a common component of AP-1 and observed that it was indeed up-regulated in infected cells .
 cell type: infected cells; RNA: mRNA; protein: c-Fos; protein: AP-1
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: infected cells, mRNA, c-Fos, AP-1 
Answer:
 cell type: infected cells; RNA: mRNA; protein: c-Fos; protein: AP-1