14794
To characterize regulatory sequences important for promoter activity, we performed linker scanning analysis of the 92-bp CD11b promoter and demonstrate that a sequence at bp -60 is essential for CD11b promoter activity.
 CD11b promoter, 92-bp CD11b promoter, CD11b promoter
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 CD11b promoter, 92-bp CD11b promoter, CD11b promoter