5419
Since promoter elements controlling collagenase transcription in monocytic cells have not been previously defined, we sought to delineate responsive cis-acting elements of the collagenase promoter in transiently transfected human (U937) and murine (J774) monocytic cell lines .
 DNA: collagenase promoter; DNA: cis-acting elements; protein: collagenase; protein: collagenase
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: collagenase promoter, cis-acting elements, collagenase, collagenase 
Answer:
 DNA: collagenase promoter; DNA: cis-acting elements; protein: collagenase; protein: collagenase