7095
In this paper, we show that HCMV down regulates gamma interferon ( IFN-gamma )-induced HLA-DR expression in U373 MG astrocytoma cells due to a defect downstream of STAT1 phosphorylation and nuclear translocation.
 STAT1, IFN-gamma, U373 MG astrocytoma cells, HLA-DR
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:
 STAT1, IFN-gamma, U373 MG astrocytoma cells, HLA-DR