1503
Its expression remained very low in nuclei of HIV1 -infected macrophages .
 cell type: HIV1 -infected macrophages
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: HIV1 -infected macrophages 
Answer:
 cell type: HIV1 -infected macrophages