the toxicity of cis- and trans-cypermethrin to rainbow trout was investigated and the concentrations of the two isomers in brain associated with toxic signs ( excitability and loss of equilibrium ) were determined . cis-cypermethrin and trans-cypermethrin were equally toxic and showed similar brain levels associated with toxic signs ( cis:0.25 micrograms/g , mean ( range 0.07-0.53 ) ;
C0086045
concentrations
C0006104
brain