10890
In vivo footprinting and mutational analysis of the proximal CD19 promoter reveal important roles for an SP1/Egr-1 binding site and a novel site termed the PyG box .
 proximal CD19 promoter, PyG box, SP1/Egr-1 binding site
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:
 proximal CD19 promoter, PyG box, SP1/Egr-1 binding site