14790
The Sp1 transcription factor binds the CD11b promoter specifically in myeloid cells in vivo and is essential for myeloid-specific promoter activity .
 Sp1 transcription factor, myeloid-specific promoter, CD11b promoter, transcription factor
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:
 Sp1 transcription factor, myeloid-specific promoter, CD11b promoter, transcription factor