4959
We found that two IL-1alpha kappaB-like sites (positions -1,065 to -1,056 and +646 to +655 ) specifically formed a complex with NF-kappaB -containing nuclear extract from MT-2 cells and that NF-kappaB bound with higher affinity to the 3' NF-kappaB binding site than to the 5' NF-kappaB site .
 NF-kappaB, NF-kappaB, +646 to +655, -1,065 to -1,056, NF-kappaB, NF-kappaB, MT-2 cells, 3' NF-kappaB binding site, IL-1alpha, 5' NF-kappaB site, IL-1alpha kappaB-like sites
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:
 NF-kappaB, NF-kappaB, +646 to +655, -1,065 to -1,056, NF-kappaB, NF-kappaB, MT-2 cells, 3' NF-kappaB binding site, IL-1alpha, 5' NF-kappaB site, IL-1alpha kappaB-like sites