Circadian Rhythmicity in Amino Acid Incorporation in Euglena gracilis

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Science  28 Jun 1968:
Vol. 160, Issue 3835, pp. 1454-1456
DOI: 10.1126/science.160.3835.1454


A daily rhythm of amino acid incorporation exists in nondividing cultures of Euglena kept in a light-dark cycle. This rhythmicity persists for the two cycles measured in cultures transferred to constant conditions and is therefore probably circadian in nature.

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