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We demonstrated that pairs of familiar inbred mice of the same or different genotypes ( C57BL / 6J and BTBR ) that were habituated to new objects and their spatial location , had enhanced episodic memory in the spatial object recognition test , whereas individually - trained animals failed to solve this task .
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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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