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To explore the expression of adhesion molecules , monocyte chemoattractant protein-1 ( MCP-1 ), and Hsp60 in human umbilical vein endothelial cells ( HUVECs ), Northern blot analyses were used.
 monocyte chemoattractant protein-1, MCP-1, endothelial cells, HUVECs, human umbilical vein endothelial cells, adhesion molecules, Hsp60
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:
 monocyte chemoattractant protein-1, MCP-1, endothelial cells, HUVECs, human umbilical vein endothelial cells, adhesion molecules, Hsp60