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Table 2.

Free endogenous phenylalanine in lysates prepared from white muscle and gills of P. brachycephalum maintained at control temperature(0°C) or acclimated to 5°C and of Z. viviparus acclimated to 5°C or maintained at control temperature (10°C)

Phe (mmol l-1 lysate)
SpeciesNWhite muscleGill
P. brachycephalum    
   0°C 0.32±0.05* 0.14±0.05 
   5°C 0.21±0.03* 0.08±0.01 
Z. viviparus    
   5°C 0.10±0.03 0.11±0.02 
   10°C 0.08±0.01 0.08±0.02 
Phe (mmol l-1 lysate)
SpeciesNWhite muscleGill
P. brachycephalum    
   0°C 0.32±0.05* 0.14±0.05 
   5°C 0.21±0.03* 0.08±0.01 
Z. viviparus    
   5°C 0.10±0.03 0.11±0.02 
   10°C 0.08±0.01 0.08±0.02 

Incorporation of [2,3,4,5,6-3H]Phe was corrected for free endogenous Phe.

Values are means ± s.e.m.

*

A significant difference (P<0.05) of free endogenous Phe concentration in lysates prepared from white muscle between species and within species at varying acclimation temperatures

A significant difference (P<0.05) of free endogenous Phe concentration in lysates prepared from different tissues of the same species acclimated to the same temperature

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