15415
The balance between the canonical agonist Angpt - 1 and its competitive inhibitor , Angpt - 2 , regulates basal endothelial barrier function and the leakage and vascular inflammation that develop in response to pathogens and cytokines .
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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:
 None