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Taken together , our results indicate that arsenic indeed upregulates the AT1R expression , thus highlighting a role of arsenic - induced aberrant AT1R signaling in the pathogenesis of hypertension .
 arsenic, arsenic
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 arsenic, arsenic