17945
DAT - KO mice displayed increased hyperactivity , increased velocity , less time immobile , and a failure to habituate over time in the open field unlike their DAT wildtype ( DAT - WT ) and heterozygous ( DAT - HET ) littermates .
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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