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Pineal N-acetyltransferase in chickens: Rhythm persists in constant darkness

Journal of Comparative Physiology APublished 1 March 1975
Sue Binkley, Ellen B. Geller
Citations61
SJR quartileQ1
SJR score0.64
SNIP1.00

TL;DR

The daily rhythm in an enzyme, pineal serotonin N-acetyltransferase activity was studied in chickens kept in conditions of constant dark and had a period length of approximately 24 hours which are characteristics of truly circadian rhythms.

Abstract

The daily rhythm in an enzyme, pineal serotonin N-acetyltransferase activity was studied in chickens kept in conditions of constant dark. The rhythm persisted and had a period length of approximately 24 hours which are characteristics of truly circadian rhythms. The detailed documentation of the rhythm (Fig. 1) shows the shape of the oscillation and clear anticipation of the time of lights on. Both the rise and fall of the rhythm occur without stimulation by light or dark.

Keywords

Neuroscience