16211
While there is consistency in experimental and clinical studies that overactivation of the renin angiotensin system promotes aortic aneurysm development , there are many unknowns regarding the mechanistic basis underlying AngII - induced aneurysms .
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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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