7827
The anticoagulant activities were investigated by measuring activated partial thromboplastin time ( aPTT ) and prothrombin time ( PT ) , and the ability to inhibit production of thrombin and activated factor X ( FXa ) was investigated in human umbilical vein endothelial cells ( HUVECs ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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