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MATERIALS AND METHODS : To test whether early life stress increases anxiety in mice , non - invasive tail cuff method was used to examine the autonomic nervous system activity by assessing cardiovascular reactivity and response to acute mixing stress ( AMS ) and restraint stress ( RS ) in adult mice subjected to early postnatal stress as compared to control .
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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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