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We observed that dexamethasone dramatically inhibited RANTES mRNA expression dose dependently in anti-CD3 activated Hut-78 T cells and human PBMCs .
 human PBMCs, RANTES, RANTES mRNA, anti-CD3 activated Hut-78 T 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:
 human PBMCs, RANTES, RANTES mRNA, anti-CD3 activated Hut-78 T cells