1410
Furthermore, multimerized region II sequence elements enhanced the activity of a heterologous thymidine kinase promoter in monocytic cells but not other cell types tested.
 cell type: monocytic cells; DNA: region II; DNA: heterologous thymidine kinase promoter; DNA: multimerized region II sequence elements
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: monocytic cells, region II, heterologous thymidine kinase promoter, multimerized region II sequence elements 
Answer:
 cell type: monocytic cells; DNA: region II; DNA: heterologous thymidine kinase promoter; DNA: multimerized region II sequence elements