9777
The objectives of this study were to (1) determine the time course of neutrophil adhesion to monolayers of human umbilical vein endothelial cells ( HUVECs ) that were exposed to 60 minutes of anoxia followed by 30 to 600 minutes of reoxygenation and (2) define the mechanisms responsible for both the early (minutes) and late (hours) hyperadhesivity of postanoxic HUVECs to human neutrophils .
 HUVECs, postanoxic HUVECs, human neutrophils, human umbilical vein endothelial cells, HUVECs
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:
 HUVECs, postanoxic HUVECs, human neutrophils, human umbilical vein endothelial cells, HUVECs