1. Acclimation of laboratory rats Rattus norvegicus albino to long scotophase 8L:16D and 4L:20D at an ambient temperature (Ta) of 25°C caused an increase in urinary free catecholamine compared to 12L:12D at Ta = 25°C. 2. Transferring the same individuals from 8L:16D to 12L:12D (at Ta = 25°C) caused a decrease in this factor. 3. The results of this study suggest that acclimation to long scotophase increases sympathetic nervous system and chromaffine cell activities.
|Number of pages||2|
|Journal||Comparative biochemistry and physiology. C: Comparative pharmacology|
|State||Published - 1983|
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