12928
Using electrophoretic mobility shift assays and specific antibodies, we showed that CREB-1 binds specifically to the -79 to -52 region of the CD4 promoter .
 DNA: CD4 promoter; protein: CREB-1; DNA: -79 to -52 region
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: CD4 promoter, CREB-1, -79 to -52 region 
Answer:
 DNA: CD4 promoter; protein: CREB-1; DNA: -79 to -52 region