The blood, by night and day

Day/night pattern of arterial blood gases in the cow.

Both metabolic rate and pulmonary ventilation change throughout 24h with a circadian pattern. Because their changes occur almost in synchrony and by a similar amount, blood gases may remain steady within a narrow range. We tested this possibility in five cows (Bos taurus, Bruna Italiana breed), maintained in a stable at 29 degrees C, under natural light-dark (LD) regime, by measuring arterial b...

The difference between night and day.

All day, and all of the night.

Passenger vehicle occupant fatalities by day and night--a contrast.

The passenger vehicle occupant fatality rate at nighttime is about three times higher than the daytime rate. In 2005, among the fatally injured passenger vehicle occupants, the proportion of unrestrained occupants was much higher during nighttime than daytime. Also during nighttime, among passenger vehicle occupants killed in crashes, alcohol involvement, speeding, and single-­vehicle crash fat...

Liver size: Waning by day, Waxing by Night.

Hans Reinke * and Gad Asher * 1 University of Düsseldorf, Medical Faculty, Institute of Clinical Chemistry and Laboratory Diagnostics, 40225 Düsseldorf, Germany. 2 IUF-Leibniz Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany. 3 Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, 7610001, Israel. * Correspondence to: [email protected]...