23673
Using field potential recordings in CA3 of adult heterozygous BDNF knockout ( ko , BDNF + / - ) mice we observed impaired ( ~ 50 % ) NMDAR - independent MF - LTP .
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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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