4759
Costimulation of U1 cells with LPS plus GM-CSF resulted in the accumulation of steady-state levels of HIV RNA ; however, only a weak induction of HIV long terminal repeat -driven transcription , which was not associated with the activation of the cellular transcription factor nuclear factor-kappa B , was noted.
 HIV long terminal repeat, cellular transcription factor, nuclear factor-kappa B, HIV RNA, GM-CSF, U1 cells
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:
 HIV long terminal repeat, cellular transcription factor, nuclear factor-kappa B, HIV RNA, GM-CSF, U1 cells