Gene for Mammals' Body Clocks Found

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Science  19 Sep 1997:
Vol. 277, Issue 5333, pp. 1762
DOI: 10.1126/science.277.5333.1762

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In recent years, biologists have made significant progress in understanding the biochemical gears and springs that keep organisms' internal clocks running, largely by identifying a handful of genes that appear key to the process in a few animal and plant species. Now, a team at the Baylor College of Medicine in Houston, Texas, has come up with the first evidence that some of these genes may have been conserved over the course of evolution, indicating that universal mechanisms across all species might keep the clock ticking.