behaviour was noted for 30 min following injection and at this time , brains were removed and levels of noradrenaline ( na ) , dopamine ( da ) , homovanillic acid ( hva ) , 5-hydroxytryptamine ( 5-ht ) and 5-hydroxyindoleacetic acid ( 5-hiaa ) were determined spectrophotofluorimetrically .
C0004927
behaviour
C0006104
brains